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Free Calculator

Tool index

530 published tools. The same data is available as JSON. Programmatic access, including a calculation endpoint and an MCP server, is documented on the developer pages.

MCP call pattern

Use tools/list to discover names and schemas, then call the calculator tool you need.

curl -X POST https://freecalculator.tech/mcp \
  -H "Content-Type: application/json" \
  -H "Accept: application/json, text/event-stream" \
  --data '{
    "jsonrpc": "2.0",
    "id": 1,
    "method": "tools/list",
    "params": {}
  }'

curl -X POST https://freecalculator.tech/mcp \
  -H "Content-Type: application/json" \
  -H "Accept: application/json, text/event-stream" \
  --data '{
    "jsonrpc": "2.0",
    "id": 2,
    "method": "tools/call",
    "params": {
      "name": "calculator_percentage",
      "arguments": { "mode": "percentOf", "percent": 15, "value": 80 }
    }
  }'
  • Consulting Bill Rate Calculator

    Address:
    /tools/consulting-bill-rate-calculator
    Category:
    Professional & Industry
    Description:
    Work out the hourly rate to charge a client so that target margin is met after overhead and non-billable time.
    Keywords:
    Consulting bill rate, Loaded-cost rate build-up, it professional services, it consultant, solutions architect, financial analyst
    Inputs:
    Currency (choice), Annual salary (number), Annual benefits and payroll cost (number), Annual overhead allocated (number), Annual available hours (number), Utilisation (number), Target margin (number)
    Result:
    A main result with a supporting breakdown where relevant.
  • Paint Calculator

    Address:
    /tools/paint-calculator
    Category:
    Home
    Description:
    Estimate paint containers from room dimensions and coverage.
    Keywords:
    paint calculator, room paint, paint coverage
    Inputs:
    Dimension unit (choice), Room length (number), Room width (number), Wall height (number), Doors and windows area (number), Number of coats (number), Coverage per container (number), Waste allowance (number), Include ceiling (yes/no)
    Result:
    A main result with a supporting breakdown where relevant.
  • Pay Raise Calculator

    Address:
    /tools/pay-raise-calculator
    Category:
    Career
    Description:
    Calculate new pay and the value of a percentage raise.
    Keywords:
    pay raise, salary increase, new salary
    Inputs:
    Current annual pay (number), Raise (number)
    Result:
    A main result with a supporting breakdown where relevant.
  • Age Calculator

    Address:
    /tools/age-calculator
    Category:
    Everyday
    Description:
    Calculate exact age in years, months, days, and total elapsed days.
    Keywords:
    age calculator, date of birth, how old
    Inputs:
    Date of birth (date), Age on date (date)
    Result:
    A main result with a supporting breakdown where relevant.
  • Discount Calculator

    Address:
    /tools/discount-calculator
    Category:
    Finance
    Description:
    Calculate a sale price, savings, and optional additional discount.
    Keywords:
    discount, sale price, percent off, savings
    Inputs:
    Original price (number), Discount (number), Additional discount (number)
    Result:
    A main result with a supporting breakdown where relevant.
  • Loaded Labour Rate Calculator

    Address:
    /tools/loaded-labor-rate-calculator
    Category:
    Professional & Industry
    Description:
    Find the true hourly cost of an employee once benefits, payroll cost and overhead are included.
    Keywords:
    Loaded labour rate, Employer cost of compensation, hr workforce, hr manager, financial analyst, accountant
    Inputs:
    Currency (choice), Annual salary (number), Benefits (number), Payroll taxes and insurance (number), Allocated overhead (number), Annual productive hours (number)
    Result:
    A main result with a supporting breakdown where relevant.
  • Percentage Calculator

    Address:
    /tools/percentage-calculator
    Category:
    Math
    Description:
    Calculate percentages, proportions, and percentage change with a clear formula breakdown.
    Keywords:
    percentage, percent, percentage of, percent change
    Inputs:
    What do you want to work out? (choice), First value (number), Second value (number)
    Result:
    A main result with a supporting breakdown where relevant.
  • Word Counter

    Address:
    /tools/word-counter
    Category:
    Text Tools
    Description:
    Count words, characters, sentences and paragraphs.
    Keywords:
    word counter, count words, text statistics
    Inputs:
    Text (text)
    Result:
    Word count
  • JSON Formatter

    Address:
    /tools/json-formatter
    Category:
    Developer Tools
    Description:
    Format JSON into clean, readable indentation locally.
    Keywords:
    json formatter, pretty print json, format json
    Inputs:
    JSON (text)
    Result:
    Formatted JSON
  • JSON Validator

    Address:
    /tools/json-validator
    Category:
    Developer Tools
    Description:
    Check JSON syntax and see clear parsing errors locally.
    Keywords:
    json validator, validate json, json syntax
    Inputs:
    JSON (text)
    Result:
    Validation result
  • Length Converter

    Address:
    /tools/length-converter
    Category:
    Conversions
    Description:
    Convert common metric and imperial lengths.
    Keywords:
    length converter, metres to feet, miles to kilometres
    Inputs:
    Value (number), From (choice), To (choice)
    Result:
    A main result with a supporting breakdown where relevant.
  • Unit Converter

    Address:
    /tools/unit-converter
    Category:
    Conversions
    Description:
    Convert length and weight between metric and imperial units instantly.
    Keywords:
    convert, unit, length, weight, metric, imperial, kg to lbs, cm to inches
    Inputs:
    Measurement (choice), Value (number), From (choice), To (choice)
    Result:
    A main result with a supporting breakdown where relevant.
  • Overtime Calculator

    Address:
    /tools/overtime-calculator
    Category:
    Career
    Description:
    Estimate regular and overtime gross pay.
    Keywords:
    overtime, hourly pay, time and a half
    Inputs:
    Hourly rate (number), Regular hours (number), Overtime hours (number), Overtime multiplier (number)
    Result:
    A main result with a supporting breakdown where relevant.
  • Character Counter

    Address:
    /tools/character-counter
    Category:
    Text Tools
    Description:
    Count Unicode characters, bytes, lines and words.
    Keywords:
    character counter, letter counter, text length
    Inputs:
    Text (text)
    Result:
    Character count
  • Percentage Increase Calculator

    Address:
    /tools/percentage-increase-calculator
    Category:
    Math
    Description:
    Calculate a value after a percentage increase and see the exact increase amount.
    Keywords:
    percentage increase, increase calculator, percent
    Inputs:
    Original value (number), Percentage (number)
    Result:
    A main result with a supporting breakdown where relevant.
  • Tip Calculator

    Address:
    /tools/tip-calculator
    Category:
    Finance
    Description:
    Calculate a tip, total bill, split per person, and common tip comparisons.
    Keywords:
    tip, gratuity, bill split, tip percentage
    Inputs:
    Bill amount (number), Tip (number), Number of people (number)
    Result:
    A main result with a supporting breakdown where relevant.
  • Date Difference Calculator

    Address:
    /tools/date-difference-calculator
    Category:
    Everyday
    Description:
    Find the calendar and total-day difference between two dates.
    Keywords:
    date difference, days between dates, date calculator
    Inputs:
    Start date (date), End date (date), Always show a positive difference (yes/no)
    Result:
    A main result with a supporting breakdown where relevant.
  • Function Point Count Calculator

    Address:
    /tools/function-point-estimate-calculator
    Category:
    Professional & Industry
    Description:
    Size a software application from its data and transaction functions before estimating effort or cost.
    Keywords:
    Unadjusted function point count, Function Point Analysis (Counting Practices Manual), software engineering, software engineer, project manager, solutions architect
    Inputs:
    External inputs — low complexity (number), External inputs — average complexity (number), External inputs — high complexity (number), External outputs — low complexity (number), External outputs — average complexity (number), External outputs — high complexity (number), External inquiries — low complexity (number), External inquiries — average complexity (number), External inquiries — high complexity (number), Internal logical files — low complexity (number), Internal logical files — average complexity (number), Internal logical files — high complexity (number), External interface files — low complexity (number), External interface files — average complexity (number), External interface files — high complexity (number)
    Result:
    A main result with a supporting breakdown where relevant.
  • Flooring Calculator

    Address:
    /tools/flooring-calculator
    Category:
    Home
    Description:
    Estimate flooring area and full boxes.
    Keywords:
    flooring calculator, floor area, flooring boxes
    Inputs:
    Dimension unit (choice), Area length (number), Area width (number), Number of equal areas (number), Waste allowance (number), Coverage per box (number)
    Result:
    A main result with a supporting breakdown where relevant.
  • Commission Calculator

    Address:
    /tools/commission-calculator
    Category:
    Career
    Description:
    Calculate commission and total gross earnings.
    Keywords:
    commission, sales, earnings
    Inputs:
    Sales amount (number), Commission rate (number), Base pay for period (number)
    Result:
    A main result with a supporting breakdown where relevant.
  • COCOMO II Effort and Schedule Calculator

    Address:
    /tools/cocomo-ii-estimate-calculator
    Category:
    Professional & Industry
    Description:
    Estimate development effort, schedule and average team size for a software project of a known size.
    Keywords:
    COCOMO II post-architecture effort and schedule, COCOMO II.2000 post-architecture model, software engineering, project manager, software engineer, program manager
    Inputs:
    Size (number), Sum of the five scale factors (number), Product of the effort multipliers (number)
    Result:
    A main result with a supporting breakdown where relevant.
  • Time Duration Calculator

    Address:
    /tools/time-duration-calculator
    Category:
    Everyday
    Description:
    Calculate elapsed hours and minutes between two times, including overnight.
    Keywords:
    time duration, hours between times, elapsed time
    Inputs:
    Start time (time), End time (time), When the end is earlier (choice), Time format (12 or 24 hour)
    Result:
    A main result with a supporting breakdown where relevant.
  • Sales Tax Calculator

    Address:
    /tools/sales-tax-calculator
    Category:
    Finance
    Description:
    Add sales tax or find the pre-tax price from a tax-inclusive total.
    Keywords:
    sales tax, tax calculator, pre tax, after tax
    Inputs:
    Calculation (choice), Amount (number), Sales tax rate (number)
    Result:
    A main result with a supporting breakdown where relevant.
  • Weight Converter

    Address:
    /tools/weight-converter
    Category:
    Conversions
    Description:
    Convert metric and imperial weights.
    Keywords:
    weight converter, kg to lb, pounds to kilograms
    Inputs:
    Value (number), From (choice), To (choice)
    Result:
    A main result with a supporting breakdown where relevant.
  • Concrete Calculator

    Address:
    /tools/concrete-calculator
    Category:
    Home
    Description:
    Estimate concrete volume and bag quantity.
    Keywords:
    concrete calculator, concrete volume, concrete bags
    Inputs:
    Dimension unit (choice), Length (number), Width (number), Depth (number), Number of equal areas (number), Waste allowance (number), Volume per bag (number)
    Result:
    A main result with a supporting breakdown where relevant.
  • JSON Minifier

    Address:
    /tools/json-minifier
    Category:
    Developer Tools
    Description:
    Remove optional whitespace from valid JSON.
    Keywords:
    json minifier, minify json, compact json
    Inputs:
    JSON (text)
    Result:
    Minified JSON
  • Sentence Counter

    Address:
    /tools/sentence-counter
    Category:
    Text Tools
    Description:
    Count sentences and average words per sentence.
    Keywords:
    sentence counter, count sentences, sentence length
    Inputs:
    Text (text)
    Result:
    Sentence count
  • BMI Calculator

    Address:
    /tools/bmi-calculator
    Category:
    Health & Fitness
    Description:
    Calculate body mass index from height and weight, with adult BMI categories and a healthy-weight range.
    Keywords:
    bmi calculator, body mass index, healthy weight, weight status, metric bmi, imperial bmi
    Inputs:
    Units (choice), Height (number), Weight (number), Height (feet) (number), Height (inches) (number), Weight (number)
    Result:
    A main result with a supporting breakdown where relevant.
  • Percentage Decrease Calculator

    Address:
    /tools/percentage-decrease-calculator
    Category:
    Math
    Description:
    Calculate a value after a percentage decrease and see the exact reduction.
    Keywords:
    percentage decrease, decrease calculator, percent
    Inputs:
    Original value (number), Percentage (number)
    Result:
    A main result with a supporting breakdown where relevant.
  • Average Calculator

    Address:
    /tools/average-calculator
    Category:
    Math
    Description:
    Find the arithmetic mean, sum, count, minimum, and maximum of a number list.
    Keywords:
    average, mean, arithmetic mean, number average
    Inputs:
    Numbers (text)
    Result:
    A main result with a supporting breakdown where relevant.
  • Temperature Converter

    Address:
    /tools/temperature-converter
    Category:
    Conversions
    Description:
    Convert Celsius, Fahrenheit, and Kelvin.
    Keywords:
    temperature converter, celsius fahrenheit, kelvin
    Inputs:
    Value (number), From (choice), To (choice)
    Result:
    A main result with a supporting breakdown where relevant.
  • Cloud Unit Cost Calculator

    Address:
    /tools/cloud-unit-cost-calculator
    Category:
    Professional & Industry
    Description:
    Express cloud spend as a cost per customer, per transaction or per other business unit.
    Keywords:
    Cloud unit cost, FinOps Framework — unit economics, cloud finops, finops practitioner, cloud architect, financial analyst
    Inputs:
    Currency (choice), Total cloud cost for the period (number), Business units in the same period (number), Revenue for the period (optional) (number)
    Result:
    A main result with a supporting breakdown where relevant.
  • Calorie / TDEE Calculator

    Address:
    /tools/calorie-tdee-calculator
    Category:
    Health & Fitness
    Description:
    Estimate daily calories from BMR formulas, activity level, and cut, maintain, or bulk goals.
    Keywords:
    calorie calculator, tdee calculator, bmr calculator, maintenance calories, mifflin st jeor, harris benedict
    Inputs:
    Units (choice), Sex used by the formula (choice), Age (number), Height (number), Weight (number), Height (feet) (number), Height (inches) (number), Weight (number), Activity level (choice), Primary formula (choice), Goal adjustment (choice)
    Result:
    A main result with a supporting breakdown where relevant.
  • Reading Time Calculator

    Address:
    /tools/reading-time-calculator
    Category:
    Text Tools
    Description:
    Estimate reading time at a chosen reading speed.
    Keywords:
    reading time calculator, reading duration, words per minute
    Inputs:
    Text (text)
    Result:
    Estimated reading time
  • Business Days Calculator

    Address:
    /tools/business-days-calculator
    Category:
    Everyday
    Description:
    Count working days between two dates.
    Keywords:
    business days, working days, weekdays, date
    Inputs:
    Start date (date), End date (date), Include the end date (yes/no), Holidays to exclude (text)
    Result:
    A main result with a supporting breakdown where relevant.
  • Bonus Calculator

    Address:
    /tools/bonus-calculator
    Category:
    Career
    Description:
    Estimate percentage and fixed gross bonus amounts.
    Keywords:
    bonus, salary bonus, gross pay
    Inputs:
    Annual salary (number), Bonus percentage (number), Additional fixed bonus (number)
    Result:
    A main result with a supporting breakdown where relevant.
  • Base64 Encoder

    Address:
    /tools/base64-encoder
    Category:
    Developer Tools
    Description:
    Encode Unicode text as standard Base64.
    Keywords:
    base64 encoder, encode base64, text to base64
    Inputs:
    Text (text)
    Result:
    Base64
  • Roofing Calculator

    Address:
    /tools/roofing-calculator
    Category:
    Home
    Description:
    Estimate roof area, squares, and bundles.
    Keywords:
    roofing calculator, roof bundles, roof squares
    Inputs:
    Dimension unit (choice), Building length (number), Building width (number), Roof pitch rise per 12 (number), Waste allowance (number), Coverage per bundle (number)
    Result:
    A main result with a supporting breakdown where relevant.
  • Hourly to Salary Calculator

    Address:
    /tools/hourly-to-salary-calculator
    Category:
    Finance
    Description:
    Convert hourly pay to annual, monthly, weekly, and daily gross income.
    Keywords:
    hourly to salary, wage calculator, annual salary
    Inputs:
    Pay amount (number), Hours per week (number), Working weeks per year (number)
    Result:
    A main result with a supporting breakdown where relevant.
  • Work Hours Calculator

    Address:
    /tools/work-hours-calculator
    Category:
    Career
    Description:
    Calculate weekly, monthly, and annual work hours.
    Keywords:
    work hours, annual hours, weekly hours
    Inputs:
    Hours per workday (number), Days per week (number), Working weeks per year (number), Unpaid break hours per week (number)
    Result:
    A main result with a supporting breakdown where relevant.
  • Time Card Calculator

    Address:
    /tools/time-card-calculator
    Category:
    Everyday
    Description:
    Total hours across multiple work shifts.
    Keywords:
    time card, work hours, shift hours, timesheet
    Inputs:
    Shifts (list of shifts), Time format (12 or 24 hour)
    Result:
    A main result with a supporting breakdown where relevant.
  • Ratio Calculator

    Address:
    /tools/ratio-calculator
    Category:
    Math
    Description:
    Simplify ratios and calculate equivalent ratios and decimal values.
    Keywords:
    ratio, simplify ratio, equivalent ratio
    Inputs:
    First term (number), Second term (number), Equivalent ratio multiplier (number)
    Result:
    A main result with a supporting breakdown where relevant.
  • Speed Converter

    Address:
    /tools/speed-converter
    Category:
    Conversions
    Description:
    Convert common speed units.
    Keywords:
    speed converter, kmh to mph, knots
    Inputs:
    Value (number), From (choice), To (choice)
    Result:
    A main result with a supporting breakdown where relevant.
  • Tile Calculator

    Address:
    /tools/tile-calculator
    Category:
    Home
    Description:
    Estimate tile area and full boxes.
    Keywords:
    tile calculator, tile boxes, tile area
    Inputs:
    Dimension unit (choice), Area length (number), Area width (number), Number of equal areas (number), Waste allowance (number), Coverage per box (number)
    Result:
    A main result with a supporting breakdown where relevant.
  • Base64 Decoder

    Address:
    /tools/base64-decoder
    Category:
    Developer Tools
    Description:
    Decode valid Base64 into Unicode text.
    Keywords:
    base64 decoder, decode base64, base64 to text
    Inputs:
    Base64 (text)
    Result:
    Decoded text
  • Case Converter

    Address:
    /tools/case-converter
    Category:
    Text Tools
    Description:
    Convert text among common writing and code cases.
    Keywords:
    case converter, title case, camel case, snake case
    Inputs:
    Text (text)
    Result:
    Converted text
  • Body Fat Percentage Calculator

    Address:
    /tools/body-fat-calculator
    Category:
    Health & Fitness
    Description:
    Estimate body fat percentage with the U.S. Navy tape-measure method.
    Keywords:
    body fat calculator, body fat percentage, navy method, tape measure body fat, waist neck hip
    Inputs:
    Units (choice), Sex used by the formula (choice), Height (number), Neck circumference (number), Waist circumference (number), Hip circumference (number), Height (feet) (number), Height (inches) (number), Neck circumference (number), Waist circumference (number), Hip circumference (number)
    Result:
    A main result with a supporting breakdown where relevant.
  • Salary to Hourly Calculator

    Address:
    /tools/salary-to-hourly-calculator
    Category:
    Finance
    Description:
    Convert annual salary to hourly, daily, weekly, and monthly gross pay.
    Keywords:
    salary to hourly, hourly rate, pay calculator
    Inputs:
    Annual salary (number), Hours per week (number), Working weeks per year (number)
    Result:
    A main result with a supporting breakdown where relevant.
  • Predetermined Overhead Rate Calculator

    Address:
    /tools/predetermined-overhead-rate-calculator
    Category:
    Professional & Industry
    Description:
    Set the rate used to apply manufacturing overhead to jobs for the coming period.
    Keywords:
    Predetermined overhead rate, Job order costing — predetermined overhead rate, manufacturing, accountant, manufacturing engineer, financial analyst
    Inputs:
    Currency (choice), Estimated manufacturing overhead (number), Estimated allocation base (number), Actual base used so far (optional) (number)
    Result:
    A main result with a supporting breakdown where relevant.
  • Ideal Weight Calculator

    Address:
    /tools/ideal-weight-calculator
    Category:
    Health & Fitness
    Description:
    Compare Devine, Robinson, Miller, and Hamwi ideal-weight formulas side by side.
    Keywords:
    ideal weight calculator, healthy weight, devine formula, robinson formula, miller formula, hamwi formula
    Inputs:
    Units (choice), Sex used by the formula (choice), Height (number), Height (feet) (number), Height (inches) (number)
    Result:
    A main result with a supporting breakdown where relevant.
  • URL Encoder

    Address:
    /tools/url-encoder
    Category:
    Developer Tools
    Description:
    Percent-encode text for use in a URL component.
    Keywords:
    url encoder, percent encoding, encode url
    Inputs:
    Text or URL component (text)
    Result:
    Encoded value
  • Countdown Calculator

    Address:
    /tools/countdown-calculator
    Category:
    Everyday
    Description:
    See live time remaining or elapsed.
    Keywords:
    countdown, time remaining, elapsed time, timer
    Inputs:
    Target date and time (datetime-local), Time zone (choice), Time format (12 or 24 hour)
    Result:
    A main result with a supporting breakdown where relevant.
  • Area Converter

    Address:
    /tools/area-converter
    Category:
    Conversions
    Description:
    Convert metric and imperial area units.
    Keywords:
    area converter, acres, square feet, hectares
    Inputs:
    Value (number), From (choice), To (choice)
    Result:
    A main result with a supporting breakdown where relevant.
  • Job Offer Comparison Calculator

    Address:
    /tools/job-offer-comparison-calculator
    Category:
    Career
    Description:
    Compare two offers across pay, benefits, PTO, equity, and work costs.
    Keywords:
    job offer, salary comparison, total compensation
    Inputs:
    Base salary (number), Annual bonus (number), Annual equity value (number), Annual benefits value (number), Annual PTO value (number), Annual commute cost (number), Annual remote-work savings (number), Base salary (number), Annual bonus (number), Annual equity value (number), Annual benefits value (number), Annual PTO value (number), Annual commute cost (number), Annual remote-work savings (number)
    Result:
    A main result with a supporting breakdown where relevant.
  • Compound Interest Calculator

    Address:
    /tools/compound-interest-calculator
    Category:
    Finance
    Description:
    Estimate compound growth with contributions, scenarios, a chart, and yearly table.
    Keywords:
    compound interest, investment growth, savings calculator, interest
    Inputs:
    Starting amount (number), Annual interest rate (number), Years (number), Monthly contribution (number), Compounding frequency (choice)
    Result:
    A main result with a supporting breakdown where relevant.
  • Takt Time Calculator

    Address:
    /tools/takt-time-calculator
    Category:
    Professional & Industry
    Description:
    Find the pace of production needed to meet customer demand.
    Keywords:
    Takt time, Takt time, lean, industrial engineer, manufacturing engineer, six sigma black belt
    Inputs:
    Available production time (number), Customer demand in the same period (number)
    Result:
    A main result with a supporting breakdown where relevant.
  • Duplicate Line Remover

    Address:
    /tools/duplicate-line-remover
    Category:
    Text Tools
    Description:
    Remove repeated lines while preserving their first occurrence.
    Keywords:
    duplicate line remover, unique lines, remove duplicates
    Inputs:
    Lines (text)
    Result:
    Unique lines
  • Fraction Calculator

    Address:
    /tools/fraction-calculator
    Category:
    Math
    Description:
    Add, subtract, multiply, or divide fractions and reduce the result.
    Keywords:
    fraction, add fractions, subtract fractions, multiply fractions, divide fractions
    Inputs:
    First numerator (number), First denominator (number), Operation (choice), Second numerator (number), Second denominator (number)
    Result:
    A main result with a supporting breakdown where relevant.
  • Gravel Calculator

    Address:
    /tools/gravel-calculator
    Category:
    Home
    Description:
    Estimate gravel volume and bag quantity.
    Keywords:
    gravel calculator, gravel volume, cubic yards
    Inputs:
    Dimension unit (choice), Length (number), Width (number), Depth (number), Number of equal areas (number), Waste allowance (number), Volume per bag (number)
    Result:
    A main result with a supporting breakdown where relevant.
  • Pregnancy Due Date Calculator

    Address:
    /tools/pregnancy-due-date-calculator
    Category:
    Health & Fitness
    Description:
    Estimate a pregnancy due date from last menstrual period or conception date, with trimester dates.
    Keywords:
    pregnancy due date calculator, due date calculator, lmp due date, conception date, trimester calculator
    Inputs:
    Date type (choice), First day of last menstrual period (date), Average cycle length (number), Conception date (date)
    Result:
    A main result with a supporting breakdown where relevant.
  • Time Zone Converter

    Address:
    /tools/time-zone-converter
    Category:
    Everyday
    Description:
    Convert local times between time zones.
    Keywords:
    time zone, time converter, DST, world time
    Inputs:
    Date and local time (datetime-local), From time zone (choice), To time zone (choice), Time format (12 or 24 hour)
    Result:
    A main result with a supporting breakdown where relevant.
  • Equipment Effectiveness (OEE) Calculator

    Address:
    /tools/oee-calculator
    Category:
    Professional & Industry
    Description:
    Measure how much of planned production time is truly productive.
    Keywords:
    Overall equipment effectiveness, Overall equipment effectiveness, lean, manufacturing engineer, industrial engineer, quality engineer
    Inputs:
    Planned production time (number), Run time (number), Ideal cycle time (number), Total units produced (number), Good units (number)
    Result:
    A main result with a supporting breakdown where relevant.
  • Mulch Calculator

    Address:
    /tools/mulch-calculator
    Category:
    Home
    Description:
    Estimate mulch volume and bag quantity.
    Keywords:
    mulch calculator, mulch bags, cubic yards
    Inputs:
    Dimension unit (choice), Length (number), Width (number), Depth (number), Number of equal areas (number), Waste allowance (number), Volume per bag (number)
    Result:
    A main result with a supporting breakdown where relevant.
  • Scientific Calculator

    Address:
    /tools/scientific-calculator
    Category:
    Math
    Description:
    Evaluate scientific expressions with degree or radian angles.
    Keywords:
    scientific calculator, trigonometry, logarithm, expression
    Inputs:
    Expression (text), Angle mode (choice)
    Result:
    A main result with a supporting breakdown where relevant.
  • Text Cleaner

    Address:
    /tools/text-cleaner
    Category:
    Text Tools
    Description:
    Clean pasted whitespace, blank lines and invisible characters.
    Keywords:
    text cleaner, remove extra spaces, clean text
    Inputs:
    Text (text)
    Result:
    Cleaned text
  • Total Compensation Calculator

    Address:
    /tools/total-compensation-calculator
    Category:
    Career
    Description:
    Estimate the annual value of a complete compensation package.
    Keywords:
    total compensation, salary, benefits, equity
    Inputs:
    Base salary (number), Annual bonus (number), Annual equity value (number), Benefits value (number), Employer retirement contribution (number), Other annual compensation (number)
    Result:
    A main result with a supporting breakdown where relevant.
  • URL Decoder

    Address:
    /tools/url-decoder
    Category:
    Developer Tools
    Description:
    Decode percent-encoded URL text safely.
    Keywords:
    url decoder, decode url, percent decode
    Inputs:
    Encoded value (text)
    Result:
    Decoded value
  • Volume Converter

    Address:
    /tools/volume-converter
    Category:
    Conversions
    Description:
    Convert metric, US, and imperial volumes.
    Keywords:
    volume converter, litres gallons, cups millilitres
    Inputs:
    Value (number), From (choice), To (choice)
    Result:
    A main result with a supporting breakdown where relevant.
  • Standard Deviation Calculator

    Address:
    /tools/standard-deviation-calculator
    Category:
    Math
    Description:
    Calculate population or sample standard deviation.
    Keywords:
    standard deviation, variance, statistics, sample
    Inputs:
    Values (text), Data type (choice)
    Result:
    A main result with a supporting breakdown where relevant.
  • Slug Generator

    Address:
    /tools/slug-generator
    Category:
    Text Tools
    Description:
    Create a lowercase URL-safe slug from a title.
    Keywords:
    slug generator, url slug, slugify
    Inputs:
    Title or phrase (text)
    Result:
    URL slug
  • BTU Calculator

    Address:
    /tools/btu-calculator
    Category:
    Home
    Description:
    Estimate room cooling capacity in BTU per hour.
    Keywords:
    BTU calculator, air conditioner size, room cooling
    Inputs:
    Dimension unit (choice), Room length (number), Room width (number), Ceiling height (number), Climate (choice), Insulation (choice), Regular occupants (number), Strong direct sun (yes/no)
    Result:
    A main result with a supporting breakdown where relevant.
  • PTO Value Calculator

    Address:
    /tools/pto-value-calculator
    Category:
    Career
    Description:
    Estimate the gross salary value of paid time off.
    Keywords:
    pto, paid time off, vacation value
    Inputs:
    Annual salary (number), PTO days (number), Paid workdays per year (number)
    Result:
    A main result with a supporting breakdown where relevant.
  • UUID Generator

    Address:
    /tools/uuid-generator
    Category:
    Developer Tools
    Description:
    Generate one or more cryptographically random UUID v4 values.
    Keywords:
    uuid generator, uuid v4, random uuid
    Result:
    UUID v4 values
  • Data Storage Converter

    Address:
    /tools/data-storage-converter
    Category:
    Conversions
    Description:
    Convert decimal and binary data units.
    Keywords:
    data converter, GB GiB, bytes, data storage
    Inputs:
    Value (number), From (choice), To (choice)
    Result:
    A main result with a supporting breakdown where relevant.
  • Date Add/Subtract Calculator

    Address:
    /tools/date-add-subtract-calculator
    Category:
    Everyday
    Description:
    Add or subtract calendar time from a date.
    Keywords:
    date add, date subtract, calendar date, month end
    Inputs:
    Start date (date), Operation (choice), Years (number), Months (number), Weeks (number), Days (number)
    Result:
    A main result with a supporting breakdown where relevant.
  • Defects per Million (DPMO) Calculator

    Address:
    /tools/dpmo-calculator
    Category:
    Professional & Industry
    Description:
    Express a defect rate on a scale that can be compared across processes of different complexity.
    Keywords:
    Defects per million opportunities, Defects per million opportunities, quality six sigma, quality engineer, six sigma black belt, manufacturing engineer
    Inputs:
    Defects found (number), Units inspected (number), Opportunities per unit (number)
    Result:
    A main result with a supporting breakdown where relevant.
  • Square Footage Calculator

    Address:
    /tools/square-footage-calculator
    Category:
    Home
    Description:
    Calculate rectangular area with quantity and deductions.
    Keywords:
    square footage, room area, square feet
    Inputs:
    Dimension unit (choice), Length (number), Width (number), Number of equal areas (number), Total deduction (number)
    Result:
    A main result with a supporting breakdown where relevant.
  • Text Difference

    Address:
    /tools/text-difference
    Category:
    Text Tools
    Description:
    Compare two texts and identify added or removed lines.
    Keywords:
    text difference, text compare, diff checker
    Inputs:
    Original text (text), Changed text (text)
    Result:
    Line differences
  • Commute Cost Calculator

    Address:
    /tools/commute-cost-calculator
    Category:
    Career
    Description:
    Estimate annual commuting costs, distance, and time.
    Keywords:
    commute cost, mileage, parking, travel time
    Inputs:
    Round-trip distance (number), Commute days per week (number), Working weeks per year (number), Vehicle cost per mile (number), Parking and tolls per day (number), Round-trip commute time (number), Value of time per hour (number)
    Result:
    A main result with a supporting breakdown where relevant.
  • Day of Week Calculator

    Address:
    /tools/day-of-week-calculator
    Category:
    Everyday
    Description:
    Find the weekday for any valid date.
    Keywords:
    day of week, weekday, calendar, day of year
    Inputs:
    Date (date)
    Result:
    A main result with a supporting breakdown where relevant.
  • Process Capability Index (Cpk) Calculator

    Address:
    /tools/cpk-calculator
    Category:
    Professional & Industry
    Description:
    Judge whether a process fits inside its specification limits and whether it is centred.
    Keywords:
    Process capability index (Cp and Cpk), Process capability indices, quality six sigma, quality engineer, six sigma black belt, research scientist
    Inputs:
    Upper specification limit (number), Lower specification limit (number), Process mean (number), Process standard deviation (number)
    Result:
    A main result with a supporting breakdown where relevant.
  • Unix Timestamp Converter

    Address:
    /tools/unix-timestamp-converter
    Category:
    Developer Tools
    Description:
    Convert Unix timestamps and readable dates.
    Keywords:
    unix timestamp converter, epoch converter, timestamp to date
    Inputs:
    Timestamp or date (text)
    Result:
    Converted value
  • Probability Calculator

    Address:
    /tools/probability-calculator
    Category:
    Math
    Description:
    Calculate event, complement, combined, and binomial probabilities.
    Keywords:
    probability, binomial probability, event probability
    Inputs:
    Calculation (choice), Favorable outcomes (number), Total outcomes (number), Probability A / success (number), Probability B (number), Number of trials (number), Exact successes (number)
    Result:
    A main result with a supporting breakdown where relevant.
  • Geometry Calculator

    Address:
    /tools/geometry-calculator
    Category:
    Math
    Description:
    Calculate measurements for common 2D and 3D shapes.
    Keywords:
    geometry, area, volume, perimeter
    Inputs:
    Shape (choice), Length / radius / base (number), Width / height (number), Depth (number), Unit (choice)
    Result:
    A main result with a supporting breakdown where relevant.
  • GPA Calculator

    Address:
    /tools/gpa-calculator
    Category:
    Everyday
    Description:
    Calculate a credit-weighted GPA from multiple courses.
    Keywords:
    GPA calculator, grade point average, college GPA
    Inputs:
    Courses (list of values)
    Result:
    A main result with a supporting breakdown where relevant.
  • JWT Decoder

    Address:
    /tools/jwt-decoder
    Category:
    Developer Tools
    Description:
    Decode JWT headers and payloads locally without verification.
    Keywords:
    jwt decoder, decode jwt, jwt payload
    Inputs:
    JWT (text)
    Result:
    Decoded header and payload
  • Remote Work Savings Calculator

    Address:
    /tools/remote-work-savings-calculator
    Category:
    Career
    Description:
    Estimate annual savings from working remotely.
    Keywords:
    remote work, work from home, commute savings
    Inputs:
    Remote days per week (number), Working weeks per year (number), Commute cost avoided per day (number), Meal and incidental savings per day (number), Added home costs per day (number)
    Result:
    A main result with a supporting breakdown where relevant.
  • Pump Power Calculator

    Address:
    /tools/pump-power-calculator
    Category:
    Professional & Industry
    Description:
    Size a pump and estimate the electrical power it will draw at a given duty point.
    Keywords:
    Pump hydraulic and shaft power, Pumping system power relationships, energy utilities, mechanical engineer, electrical engineer, industrial engineer
    Inputs:
    Flow rate (number), Flow unit (choice), Total head (number), Fluid density (number), Pump efficiency (number), Motor efficiency (number)
    Result:
    A main result with a supporting breakdown where relevant.
  • Cost Performance Index (CPI) Calculator

    Address:
    /tools/cost-performance-index-calculator
    Category:
    Professional & Industry
    Description:
    Measure how much value the project has earned for each unit of cost spent.
    Keywords:
    Cost performance index, Earned value management, project management, project manager, program manager, financial analyst
    Inputs:
    Currency (choice), Earned value (EV) (number), Actual cost (AC) (number)
    Result:
    A main result with a supporting breakdown where relevant.
  • Grade Calculator

    Address:
    /tools/grade-calculator
    Category:
    Everyday
    Description:
    Calculate weighted grades and target scenarios.
    Keywords:
    grade calculator, weighted grade, final grade
    Inputs:
    Graded items (list of values), Target final grade (number)
    Result:
    A main result with a supporting breakdown where relevant.
  • LCM Calculator

    Address:
    /tools/lcm-calculator
    Category:
    Math
    Description:
    Find the least common multiple of whole numbers.
    Keywords:
    lcm, least common multiple, multiples
    Inputs:
    Whole numbers (text)
    Result:
    A main result with a supporting breakdown where relevant.
  • Regex Tester

    Address:
    /tools/regex-tester
    Category:
    Developer Tools
    Description:
    Test JavaScript regular expressions and capture groups.
    Keywords:
    regex tester, regular expression, javascript regex
    Inputs:
    Regular expression (text), Test text (text)
    Result:
    Matches
  • GCF Calculator

    Address:
    /tools/gcf-calculator
    Category:
    Math
    Description:
    Find the greatest common factor of whole numbers.
    Keywords:
    gcf, greatest common factor, gcd
    Inputs:
    Whole numbers (text)
    Result:
    A main result with a supporting breakdown where relevant.
  • Schedule Performance Index (SPI) Calculator

    Address:
    /tools/schedule-performance-index-calculator
    Category:
    Professional & Industry
    Description:
    Measure how much of the planned work the project has actually completed.
    Keywords:
    Schedule performance index, Earned value management, project management, project manager, program manager
    Inputs:
    Currency (choice), Earned value (EV) (number), Planned value (PV) (number)
    Result:
    A main result with a supporting breakdown where relevant.
  • Sleep Calculator

    Address:
    /tools/sleep-calculator
    Category:
    Everyday
    Description:
    Estimate sleep duration and cycle times.
    Keywords:
    sleep calculator, bedtime, sleep cycles
    Inputs:
    Bedtime (time), Wake time (time), Time to fall asleep (number), Awake during the night (number)
    Result:
    A main result with a supporting breakdown where relevant.
  • Fuel Cost Calculator

    Address:
    /tools/fuel-cost-calculator
    Category:
    Everyday
    Description:
    Estimate trip fuel use and cost in US or metric units.
    Keywords:
    fuel cost, trip cost, MPG, litres per 100km
    Inputs:
    Units (choice), One-way distance (number), Fuel efficiency (number), Fuel price (number), Trips (number), Include return journey (yes/no)
    Result:
    A main result with a supporting breakdown where relevant.
  • Estimate at Completion (EAC) Calculator

    Address:
    /tools/estimate-at-completion-calculator
    Category:
    Professional & Industry
    Description:
    Forecast the total cost of the project from performance so far.
    Keywords:
    Estimate at completion, Earned value forecasting, project management, project manager, program manager, financial analyst
    Inputs:
    Currency (choice), Budget at completion (BAC) (number), Earned value (EV) (number), Actual cost (AC) (number), Planned value (PV) (number), Forecast method (choice)
    Result:
    A main result with a supporting breakdown where relevant.
  • Exponent Calculator

    Address:
    /tools/exponent-calculator
    Category:
    Math
    Description:
    Raise a base to positive, negative, or decimal powers.
    Keywords:
    exponent, power, negative exponent
    Inputs:
    Base (number), Exponent (number)
    Result:
    A main result with a supporting breakdown where relevant.
  • Break-Even Point Calculator

    Address:
    /tools/break-even-point-calculator
    Category:
    Professional & Industry
    Description:
    Find the sales volume at which total revenue covers total cost.
    Keywords:
    Break-even point, Cost-volume-profit analysis, finance accounting, financial analyst, accountant, cfo
    Inputs:
    Currency (choice), Fixed costs for the period (number), Selling price per unit (number), Variable cost per unit (number), Target profit (optional) (number)
    Result:
    A main result with a supporting breakdown where relevant.
  • Square Root Calculator

    Address:
    /tools/square-root-calculator
    Category:
    Math
    Description:
    Calculate square roots and other whole-number roots.
    Keywords:
    square root, nth root, cube root
    Inputs:
    Number (number), Root index (number)
    Result:
    A main result with a supporting breakdown where relevant.
  • Contribution Margin Calculator

    Address:
    /tools/contribution-margin-calculator
    Category:
    Professional & Industry
    Description:
    See how much each sale contributes towards fixed costs and profit.
    Keywords:
    Contribution margin, Contribution margin, finance accounting, financial analyst, accountant, sales operations
    Inputs:
    Currency (choice), Selling price per unit (number), Variable cost per unit (number), Units sold (optional) (number), Fixed costs (optional) (number)
    Result:
    A main result with a supporting breakdown where relevant.
  • Mortgage Calculator

    Address:
    /tools/mortgage-calculator
    Category:
    Finance
    Description:
    Estimate mortgage payments, total interest, costs, and an amortization schedule.
    Keywords:
    mortgage, home loan, amortization, monthly payment
    Inputs:
    Home price (number), Down payment (number), Interest rate (number), Loan term (number), Annual property tax (number), Annual insurance (number), Upfront fees (number), Extra monthly payment (number)
    Result:
    A main result with a supporting breakdown where relevant.
  • Loan Calculator

    Address:
    /tools/loan-calculator
    Category:
    Finance
    Description:
    Calculate loan payments, interest, repayment, and payoff schedule.
    Keywords:
    loan, payment, interest, payoff
    Inputs:
    Loan amount (number), Annual interest rate (number), Duration (number), Extra monthly payment (number)
    Result:
    A main result with a supporting breakdown where relevant.
  • Auto Loan Calculator

    Address:
    /tools/auto-loan-calculator
    Category:
    Finance
    Description:
    Estimate a vehicle loan payment and total financing cost.
    Keywords:
    auto loan, car payment, vehicle financing
    Inputs:
    Vehicle price (number), Down payment (number), Trade-in value (number), Sales tax rate (number), Fees (number), APR (number), Duration (number)
    Result:
    A main result with a supporting breakdown where relevant.
  • Simple Interest Calculator

    Address:
    /tools/simple-interest-calculator
    Category:
    Finance
    Description:
    Calculate simple interest and final amount over time.
    Keywords:
    simple interest, principal, interest rate
    Inputs:
    Principal (number), Annual interest rate (number), Duration (number)
    Result:
    A main result with a supporting breakdown where relevant.
  • Investment Calculator

    Address:
    /tools/investment-calculator
    Category:
    Finance
    Description:
    Project investment growth with recurring contributions.
    Keywords:
    investment, compound growth, recurring contributions
    Inputs:
    Initial investment (number), Recurring contribution (number), Contribution frequency (choice), Estimated annual return (number), Duration (number), Compound frequency (choice)
    Result:
    A main result with a supporting breakdown where relevant.
  • Savings Calculator

    Address:
    /tools/savings-calculator
    Category:
    Finance
    Description:
    Project savings growth, deposits, and earned interest.
    Keywords:
    savings, interest, deposits, future value
    Inputs:
    Starting balance (number), Recurring deposit (number), Contribution frequency (choice), Annual interest rate (number), Duration (number), Compound frequency (choice)
    Result:
    A main result with a supporting breakdown where relevant.
  • ROI Calculator

    Address:
    /tools/roi-calculator
    Category:
    Finance
    Description:
    Calculate total and annualized return on investment.
    Keywords:
    roi, return on investment, annualized return
    Inputs:
    Initial cost (number), Final value (number), Holding period (optional) (number)
    Result:
    A main result with a supporting breakdown where relevant.
  • Debt Payoff Calculator

    Address:
    /tools/debt-payoff-calculator
    Category:
    Finance
    Description:
    Estimate debt payoff time, interest, and extra-payment savings.
    Keywords:
    debt payoff, interest, extra payment
    Inputs:
    Debt balance (number), APR (number), Required monthly payment (number), Extra monthly payment (number)
    Result:
    A main result with a supporting breakdown where relevant.
  • Time Difference Calculator

    Address:
    /tools/time-difference-calculator
    Category:
    Everyday
    Description:
    Find the exact gap between two times, including overnight and multi-day gaps.
    Keywords:
    time difference calculator, difference between two times, hours between times, time gap
    Inputs:
    Start time (time), End time (time), Start date (optional) (date), End date (optional) (date), Treat an earlier end time as the next day (yes/no), Time format (12 or 24 hour)
    Result:
    A main result with a supporting breakdown where relevant.
  • Epoch Time Calculator

    Address:
    /tools/epoch-time-calculator
    Category:
    Everyday
    Description:
    Convert Unix and Linux epoch time to a date, and back again.
    Keywords:
    epoch time calculator, unix time, linux timestamp, epoch converter, unix time to date
    Inputs:
    Convert (choice), Unix timestamp (number), Timestamp unit (choice), Date and time (UTC) (datetime-local), Add or subtract (number), Offset unit (choice), Time format (12 or 24 hour)
    Result:
    A main result with a supporting breakdown where relevant.
  • Deployment Frequency Calculator

    Address:
    /tools/deployment-frequency-calculator
    Category:
    Professional & Industry
    Description:
    Turn a count of production deployments into a rate per day and week.
    Keywords:
    deployment frequency, turn a count of production deployments into a rate per day and per week., devops sre, site reliability engineer
    Inputs:
    Deployments to production (number), Length of the period (number)
    Result:
    A main result with a supporting breakdown where relevant.
  • Force Calculator

    Address:
    /tools/force-calculator
    Category:
    Mechanical
    Description:
    Calculate force step by step: F = m × a (Newton's second law).
    Keywords:
    force calculator
    Inputs:
    Mass (number), Acceleration (number)
    Result:
    A main result with a supporting breakdown where relevant.
  • Flow Rate Calculator

    Address:
    /tools/flow-rate-calculator
    Category:
    Fluid
    Description:
    Calculate flow rate step by step: Q = A × v, with A = π × D² ÷ 4.
    Keywords:
    flow rate calculator
    Inputs:
    Pipe inside diameter (number), Mean velocity (number)
    Result:
    A main result with a supporting breakdown where relevant.
  • Heat Transfer Calculator

    Address:
    /tools/heat-transfer-calculator
    Category:
    Thermal & HVAC
    Description:
    Calculate heat transfer step by step: Conduction Q = k A ΔT ÷ L; convection Q = h A ΔT; overall Q = U A ΔT.
    Keywords:
    heat transfer calculator
    Inputs:
    Mode (choice), k (W/m·K), h (W/m²·K) or U (W/m²·K) (number), Area (number), Temperature difference (number), Thickness (conduction only) (number)
    Result:
    A main result with a supporting breakdown where relevant.
  • Ppk Calculator

    Address:
    /tools/ppk-calculator
    Category:
    Professional & Industry
    Description:
    Long-term process performance against the nearer specification limit.
    Keywords:
    process performance index (ppk), judge long-term performance against the nearer specification limit, allowing for where the mean sits., quality six sigma, quality engineer
    Inputs:
    Upper specification limit (number), Lower specification limit (number), Process mean (number), Overall standard deviation (number)
    Result:
    A main result with a supporting breakdown where relevant.
  • Sigma Level Calculator

    Address:
    /tools/sigma-level-calculator
    Category:
    Professional & Industry
    Description:
    Convert a defect rate or yield into a sigma level, with and without the 1.5 shift.
    Keywords:
    sigma level, convert a defect rate or a yield into a sigma level, with and without the conventional 1.5 sigma shift., quality six sigma, quality engineer
    Inputs:
    What are you starting from? (choice), Defects found (optional) (number), Units inspected (optional) (number), Opportunities per unit (optional) (number), Defects per million opportunities (optional) (number), Yield (optional) (number), 1.5 sigma shift (choice)
    Result:
    A main result with a supporting breakdown where relevant.
  • Cost of Quality Calculator

    Address:
    /tools/cost-of-quality-calculator
    Category:
    Professional & Industry
    Description:
    Total prevention, appraisal, internal and external failure costs.
    Keywords:
    cost of quality, total the four cost-of-quality categories and split them between conformance and non-conformance., quality six sigma, quality engineer
    Inputs:
    Currency (choice), Prevention costs (optional) (number), Appraisal costs (optional) (number), Internal failure costs (optional) (number), External failure costs (optional) (number), Revenue for the same period (optional) (number)
    Result:
    A main result with a supporting breakdown where relevant.
  • Cost of Poor Quality Calculator

    Address:
    /tools/copq-calculator
    Category:
    Professional & Industry
    Description:
    Total the failure costs of work that was not right first time.
    Keywords:
    cost of poor quality, total the failure costs a business carries because work was not right first time., quality six sigma, quality engineer
    Inputs:
    Currency (choice), Internal failure costs (optional) (number), External failure costs (optional) (number), Other failure costs you have identified (optional) (number), Revenue for the same period (optional) (number), Good units produced in the period (optional) (number)
    Result:
    A main result with a supporting breakdown where relevant.
  • Pareto Analysis Calculator

    Address:
    /tools/pareto-analysis-calculator
    Category:
    Professional & Industry
    Description:
    Rank up to ten categories by count with shares and cumulative share.
    Keywords:
    pareto analysis, rank up to ten categories by count and see each one's share and the running cumulative share., quality six sigma, quality engineer
    Inputs:
    Category 1 (text), Count 1 (number), Category 2 (text), Count 2 (number), Category 3 (optional) (text), Count 3 (optional) (number), Category 4 (optional) (text), Count 4 (optional) (number), Category 5 (optional) (text), Count 5 (optional) (number), Category 6 (optional) (text), Count 6 (optional) (number), Category 7 (optional) (text), Count 7 (optional) (number), Category 8 (optional) (text), Count 8 (optional) (number), Category 9 (optional) (text), Count 9 (optional) (number), Category 10 (optional) (text), Count 10 (optional) (number)
    Result:
    A main result with a supporting breakdown where relevant.
  • Availability Calculator

    Address:
    /tools/availability-calculator
    Category:
    Professional & Industry
    Description:
    Work out availability from your own MTBF and MTTR.
    Keywords:
    inherent availability, work out the availability implied by your own mean time between failures and mean time to repair., devops sre, site reliability engineer
    Inputs:
    Mean time between failures (MTBF) (number), Mean time to repair (MTTR) (number)
    Result:
    A main result with a supporting breakdown where relevant.
  • Uptime Percentage Calculator

    Address:
    /tools/uptime-percentage-calculator
    Category:
    Professional & Industry
    Description:
    Turn measured downtime into an uptime percentage for the period.
    Keywords:
    uptime percentage, turn measured downtime in a period into an uptime percentage., devops sre, site reliability engineer
    Inputs:
    Length of the period measured (number), Unavailable time in the period (number), Time excluded by agreement (optional) (number)
    Result:
    A main result with a supporting breakdown where relevant.
  • Allowed Downtime Calculator

    Address:
    /tools/allowed-downtime-calculator
    Category:
    Professional & Industry
    Description:
    See how much downtime the availability target you set allows.
    Keywords:
    downtime allowed by an availability target, see how much downtime the availability target you have set actually permits in a period., devops sre, site reliability engineer
    Inputs:
    Availability target you have set (number), Length of the period (number)
    Result:
    A main result with a supporting breakdown where relevant.
  • Error Budget Calculator

    Address:
    /tools/error-budget-calculator
    Category:
    Professional & Industry
    Description:
    See how much of your objective's error budget is left, by events or by time.
    Keywords:
    error budget, see how much of the error budget your service level objective permits has been spent, and what is left., devops sre, site reliability engineer
    Inputs:
    How is your objective measured? (choice), Service level objective (number), Valid requests in the period (number), Requests that failed the objective (number), Length of the period (number), Unavailable time so far (number)
    Result:
    A main result with a supporting breakdown where relevant.
  • MTTR Calculator

    Address:
    /tools/mttr-calculator
    Category:
    Professional & Industry
    Description:
    Work out the mean time to repair from your own incident data.
    Keywords:
    mean time to repair, work out the average time your team takes to restore service once an incident has started., devops sre, site reliability engineer
    Inputs:
    Total time spent restoring service (number), Incidents repaired (number)
    Result:
    A main result with a supporting breakdown where relevant.
  • MTBF Calculator

    Address:
    /tools/mtbf-calculator
    Category:
    Professional & Industry
    Description:
    Work out the mean time between failures from observed operating time.
    Keywords:
    mean time between failures, work out the average operating time between failures from your own observations., devops sre, site reliability engineer
    Inputs:
    Total operating time (number), Failures in that time (number)
    Result:
    A main result with a supporting breakdown where relevant.
  • Failed Deployment Recovery Time Calculator

    Address:
    /tools/recovery-time-calculator
    Category:
    Professional & Industry
    Description:
    Mean time to restore service after a change that failed.
    Keywords:
    failed deployment recovery time, work out how long it takes on average to restore service after a change that failed., devops sre, site reliability engineer
    Inputs:
    Total time to restore service after failed changes (number), Failed changes counted (number)
    Result:
    A main result with a supporting breakdown where relevant.
  • Change Failure Rate Calculator

    Address:
    /tools/change-failure-rate-calculator
    Category:
    Professional & Industry
    Description:
    Work out the share of production changes that caused a failure.
    Keywords:
    change failure rate, work out what share of your production changes caused a failure., devops sre, site reliability engineer
    Inputs:
    Changes released to production (number), Changes that caused a failure (number)
    Result:
    A main result with a supporting breakdown where relevant.
  • SLO Compliance Calculator

    Address:
    /tools/slo-compliance-calculator
    Category:
    Professional & Industry
    Description:
    Compare the service level achieved with the objective you set.
    Keywords:
    service level objective compliance, compare the service level you actually achieved with the objective your team set., devops sre, site reliability engineer
    Inputs:
    Requests that met the objective (number), Valid requests measured (number), Service level objective (number)
    Result:
    A main result with a supporting breakdown where relevant.
  • SLA Compliance Calculator

    Address:
    /tools/sla-compliance-calculator
    Category:
    Professional & Industry
    Description:
    Check measured availability against a commitment and its credit terms.
    Keywords:
    service level agreement compliance, check measured availability against the commitment in an agreement and work out any service credit it states., devops sre, site reliability engineer
    Inputs:
    Currency (choice), Length of the service period (number), Unavailable time counted against the agreement (number), Time excluded by the agreement (optional) (number), Availability committed in the agreement (number), Service credit due if missed (optional) (number), Fee for the period (optional) (number)
    Result:
    A main result with a supporting breakdown where relevant.
  • Incident Cost Calculator

    Address:
    /tools/incident-cost-calculator
    Category:
    Professional & Industry
    Description:
    Add up an incident's cost from components you can evidence.
    Keywords:
    incident cost, add up what an incident cost you, from the components you can actually evidence., devops sre, site reliability engineer
    Inputs:
    Currency (choice), Length of the incident (number), Revenue lost per hour of impact (number), People responding (optional) (number), Cost per responder hour (number), Other direct costs (optional) (number), Price as of (optional) (date), Price source (optional) (text)
    Result:
    A main result with a supporting breakdown where relevant.
  • Infrastructure Cost per Service Calculator

    Address:
    /tools/infrastructure-cost-per-service-calculator
    Category:
    Professional & Industry
    Description:
    Direct cost plus a share of shared platform cost, by your own driver.
    Keywords:
    infrastructure cost per service, work out what one service costs in infrastructure, including its share of shared platform cost., devops sre, site reliability engineer
    Inputs:
    Currency (choice), Infrastructure billed directly to the service (number), Shared infrastructure cost to allocate (optional) (number), This service's share of the allocation driver (optional) (number), Total allocation driver across all services (optional) (number), Units the service delivered (optional) (number), Price as of (optional) (date), Price source (optional) (text)
    Result:
    A main result with a supporting breakdown where relevant.
  • Cost per Deployment Calculator

    Address:
    /tools/cost-per-deployment-calculator
    Category:
    Professional & Industry
    Description:
    Divide the period's delivery cost by the deployments made.
    Keywords:
    cost per deployment, work out what one production deployment costs you in tooling, pipeline compute and engineer time., devops sre, site reliability engineer
    Inputs:
    Currency (choice), Pipeline and tooling cost for the period (number), Build and test compute cost (optional) (number), Engineer hours spent on releases (optional) (number), Cost per engineer hour (number), Deployments in the period (number), Price as of (optional) (date), Price source (optional) (text)
    Result:
    A main result with a supporting breakdown where relevant.
  • Storage Growth Calculator

    Address:
    /tools/storage-growth-calculator
    Category:
    Professional & Industry
    Description:
    Project how large a data store becomes under a growth model you choose.
    Keywords:
    storage growth projection, project how large a data store becomes under a growth model you choose from your own measured history., data engineering, data engineer
    Inputs:
    Starting volume (number), How does your data grow? (choice), Added each period (number), Growth each period (number), Number of periods (number)
    Result:
    A main result with a supporting breakdown where relevant.
  • Compression Ratio Calculator

    Address:
    /tools/compression-ratio-calculator
    Category:
    Professional & Industry
    Description:
    Turn measured sizes before and after compression into a ratio and the space saved.
    Keywords:
    compression ratio, turn the sizes you measured before and after compression into a ratio and the space you saved., data engineering, data engineer
    Inputs:
    Size before compression (number), Size after compression (number)
    Result:
    A main result with a supporting breakdown where relevant.
  • Data Retention Cost Calculator

    Address:
    /tools/data-retention-cost-calculator
    Category:
    Professional & Industry
    Description:
    Cost keeping data across storage tiers, at the prices you are charged.
    Keywords:
    data retention cost, cost keeping data for a retention period across up to three storage tiers, at the prices you are charged., data engineering, data engineer
    Inputs:
    Currency (choice), Retention period (number), Volume on the first tier (number), Price per TB-month, first tier (number), Volume on a second tier (optional) (number), Price per TB-month, second tier (optional) (number), Volume on a third tier (optional) (number), Price per TB-month, third tier (optional) (number), Price as of (optional) (date), Price source (optional) (text)
    Result:
    A main result with a supporting breakdown where relevant.
  • Cost per TB Calculator

    Address:
    /tools/cost-per-tb-calculator
    Category:
    Professional & Industry
    Description:
    Divide a cost you already know by the volume it covered.
    Keywords:
    cost per terabyte, divide a cost you already know by the volume it covered, to get a cost per terabyte., data engineering, data engineer
    Inputs:
    Currency (choice), Total cost for the period (number), Volume stored or processed (number), Price as of (optional) (date), Price source (optional) (text)
    Result:
    A main result with a supporting breakdown where relevant.
  • Data Pipeline Cost Calculator

    Address:
    /tools/data-pipeline-cost-calculator
    Category:
    Professional & Industry
    Description:
    Add up what a pipeline cost in a period, component by component.
    Keywords:
    data pipeline cost, add up what one pipeline cost in a period, component by component, from your own bill., data engineering, data engineer
    Inputs:
    Currency (choice), Compute cost (number), Orchestration cost (optional) (number), Storage cost (optional) (number), Data transfer cost (optional) (number), Tooling or licence cost (optional) (number), Pipeline runs in the period (optional) (number), Price as of (optional) (date), Price source (optional) (text)
    Result:
    A main result with a supporting breakdown where relevant.
  • ETL Cost Calculator

    Address:
    /tools/etl-cost-calculator
    Category:
    Professional & Industry
    Description:
    Cost an extract-transform-load job stage by stage.
    Keywords:
    etl cost, cost an extract-transform-load job stage by stage, with the transform costed before the load., data engineering, data engineer
    Inputs:
    Currency (choice), Extract stage cost (number), Transform stage cost (number), Load stage cost (number), Staging storage cost (optional) (number), Orchestration cost (optional) (number), Volume processed (optional) (number), Price as of (optional) (date), Price source (optional) (text)
    Result:
    A main result with a supporting breakdown where relevant.
  • ELT Cost Calculator

    Address:
    /tools/elt-cost-calculator
    Category:
    Professional & Industry
    Description:
    Cost an extract-load-transform job, with the transform inside the warehouse.
    Keywords:
    elt cost, cost an extract-load-transform job, with the transformation costed inside the warehouse where it runs., data engineering, data engineer
    Inputs:
    Currency (choice), Extract stage cost (number), Load stage cost (number), In-warehouse transform cost (number), Raw data storage cost (optional) (number), Orchestration cost (optional) (number), Volume processed (optional) (number), Price as of (optional) (date), Price source (optional) (text)
    Result:
    A main result with a supporting breakdown where relevant.
  • Data Warehouse Cost Calculator

    Address:
    /tools/data-warehouse-cost-calculator
    Category:
    Professional & Industry
    Description:
    Cost warehouse compute, storage and any fixed fee at your own prices.
    Keywords:
    data warehouse cost, cost a warehouse period from the compute you consumed, the storage you hold and any fixed fee, at your own prices., data engineering, data engineer
    Inputs:
    Currency (choice), Price per compute-hour or credit (number), Compute hours or credits used (number), Storage held (optional) (number), Price per TB-month (optional) (number), Months in the period (optional) (number), Fixed platform fee (optional) (number), Price as of (optional) (date), Price source (optional) (text)
    Result:
    A main result with a supporting breakdown where relevant.
  • Data Scan Cost Calculator

    Address:
    /tools/data-scan-cost-calculator
    Category:
    Professional & Industry
    Description:
    Cost a scanned-data query over a period, from the volume it reads.
    Keywords:
    query cost, cost a scanned-data query over a period, from the volume it reads and the price you are charged per terabyte., data engineering, data engineer
    Inputs:
    Currency (choice), Price per TB scanned (number), Data scanned per run (number), Runs in the period (number), Other charges (optional) (number), Price as of (optional) (date), Price source (optional) (text)
    Result:
    A main result with a supporting breakdown where relevant.
  • Cost per Record Calculator

    Address:
    /tools/cost-per-record-calculator
    Category:
    Professional & Industry
    Description:
    Spread a pipeline cost over the records it processed.
    Keywords:
    cost per record processed, spread a pipeline cost over the records it processed, shown per million records., data engineering, data engineer
    Inputs:
    Currency (choice), Total pipeline cost for the period (number), Records processed (number), Price as of (optional) (date), Price source (optional) (text)
    Result:
    A main result with a supporting breakdown where relevant.
  • Pipeline Throughput Calculator

    Address:
    /tools/pipeline-throughput-calculator
    Category:
    Professional & Industry
    Description:
    Turn a run's record count and elapsed time into a processing rate.
    Keywords:
    pipeline throughput, turn a run's record count and elapsed time into records per second, minute and hour., data engineering, data engineer
    Inputs:
    Records processed (number), Elapsed time (number), Volume processed (optional) (number)
    Result:
    A main result with a supporting breakdown where relevant.
  • Data Freshness Calculator

    Address:
    /tools/data-freshness-calculator
    Category:
    Professional & Industry
    Description:
    Measure how old your data is when it is used, against your own target.
    Keywords:
    data freshness (data currency), measure how old your data is at the moment it is used, against the freshness target your team has set., data engineering, data engineer
    Inputs:
    Last successful load finished (datetime-local), Time the data is being used (datetime-local), Freshness target (number)
    Result:
    A main result with a supporting breakdown where relevant.
  • Token Cost Calculator

    Address:
    /tools/token-cost-calculator
    Category:
    Professional & Industry
    Description:
    Cost the tokens a model used, pricing input and output separately at your own rates.
    Keywords:
    token cost, cost the tokens a model consumed in a period, pricing input and output separately at your own rates., ai machine learning, ml engineer
    Inputs:
    Currency (choice), Price per million input tokens (number), Input tokens used (number), Price per million output tokens (optional) (number), Output tokens used (optional) (number), Other charges (optional) (number), Price as of (optional) (date), Price source (optional) (text)
    Result:
    A main result with a supporting breakdown where relevant.
  • Inference Cost Calculator

    Address:
    /tools/inference-cost-calculator
    Category:
    Professional & Industry
    Description:
    Cost live model traffic from your request volume, token counts and prices.
    Keywords:
    inference cost, cost live model traffic for a period from your own request volume, token counts per call and prices., ai machine learning, ml engineer
    Inputs:
    Currency (choice), Requests in the period (number), Input tokens per request (number), Output tokens per request (number), Price per million input tokens (number), Price per million output tokens (optional) (number), Platform or gateway cost (optional) (number), Price as of (optional) (date), Price source (optional) (text)
    Result:
    A main result with a supporting breakdown where relevant.
  • AI Cost per Customer Calculator

    Address:
    /tools/ai-cost-per-customer-calculator
    Category:
    Professional & Industry
    Description:
    Spread AI cost across the customers who used the feature.
    Keywords:
    ai cost per customer, spread the ai cost of a period across the customers who actually used the feature., ai machine learning, ml engineer
    Inputs:
    Currency (choice), Total AI cost for the period (number), Customers served (number), Months in the period (optional) (number), Price as of (optional) (date), Price source (optional) (text)
    Result:
    A main result with a supporting breakdown where relevant.
  • Batch Inference Cost Calculator

    Address:
    /tools/batch-inference-cost-calculator
    Category:
    Professional & Industry
    Description:
    Cost a batch job over a known number of items at the batch prices you were quoted.
    Keywords:
    batch inference cost, cost a batch job over a known number of items at the batch prices you were actually quoted., ai machine learning, ml engineer
    Inputs:
    Currency (choice), Items in the batch (number), Input tokens per item (number), Output tokens per item (optional) (number), Batch price per million input tokens (number), Batch price per million output tokens (optional) (number), Other charges (optional) (number), Price as of (optional) (date), Price source (optional) (text)
    Result:
    A main result with a supporting breakdown where relevant.
  • Embedding Cost Calculator

    Address:
    /tools/embedding-cost-calculator
    Category:
    Professional & Industry
    Description:
    Cost embedding a corpus once, plus any rebuilds, at your own per-million-token price.
    Keywords:
    embedding cost, cost embedding a corpus once, plus any rebuilds, at the per-million-token price you are charged., ai machine learning, ml engineer
    Inputs:
    Currency (choice), Price per million tokens embedded (number), Tokens embedded (number), Additional re-embedding passes (optional) (number), Vector storage cost (optional) (number), Price as of (optional) (date), Price source (optional) (text)
    Result:
    A main result with a supporting breakdown where relevant.
  • Vector Search Cost Calculator

    Address:
    /tools/vector-search-cost-calculator
    Category:
    Professional & Industry
    Description:
    Cost a vector search service from your query volume, index size and prices.
    Keywords:
    vector search cost, cost a vector search service for a period from your query volume, index size and your own prices., ai machine learning, ml engineer
    Inputs:
    Currency (choice), Price per thousand queries (number), Queries in the period (number), Index size held (optional) (number), Price per GB-month of index (optional) (number), Months in the period (optional) (number), Fixed platform fee (optional) (number), Price as of (optional) (date), Price source (optional) (text)
    Result:
    A main result with a supporting breakdown where relevant.
  • GPU Cost Calculator

    Address:
    /tools/gpu-cost-calculator
    Category:
    Professional & Industry
    Description:
    Cost the accelerators a piece of work occupied, at your own per-GPU-hour price.
    Keywords:
    gpu cost, cost the accelerators a piece of work occupied, at the per-gpu-hour price you are charged., ai machine learning, ml engineer
    Inputs:
    Currency (choice), Price per GPU-hour (number), GPUs used (number), Hours used (number), Attached storage cost (optional) (number), Data transfer cost (optional) (number), Price as of (optional) (date), Price source (optional) (text)
    Result:
    A main result with a supporting breakdown where relevant.
  • Training Run Cost Calculator

    Address:
    /tools/training-run-cost-calculator
    Category:
    Professional & Industry
    Description:
    Cost the compute of one training run, and of every restart you paid for.
    Keywords:
    training run cost, cost the compute of one training run, and of every restart you paid for., ai machine learning, ml engineer
    Inputs:
    Currency (choice), Price per accelerator-hour (number), Accelerators per run (number), Hours per run (number), Runs carried out (number), Checkpoint storage cost (optional) (number), Other charges (optional) (number), Price as of (optional) (date), Price source (optional) (text)
    Result:
    A main result with a supporting breakdown where relevant.
  • Model Training Cost Calculator

    Address:
    /tools/model-training-cost-calculator
    Category:
    Professional & Industry
    Description:
    Add up what training a model cost in compute, data work, storage and engineering time.
    Keywords:
    model training cost, add up what training a model cost in total — compute, data work, storage and engineering time., ai machine learning, ml engineer
    Inputs:
    Currency (choice), Training compute cost (number), Data preparation cost (optional) (number), Labelling or annotation cost (optional) (number), Dataset and checkpoint storage cost (optional) (number), Engineering time cost (optional) (number), Models produced (optional) (number), Price as of (optional) (date), Price source (optional) (text)
    Result:
    A main result with a supporting breakdown where relevant.
  • Model Hosting Cost Calculator

    Address:
    /tools/model-hosting-cost-calculator
    Category:
    Professional & Industry
    Description:
    Cost a serving endpoint, with the idle hours shown separately.
    Keywords:
    model hosting cost, cost a dedicated serving endpoint, showing what the idle hours cost you as well as the busy ones., ai machine learning, ml engineer
    Inputs:
    Currency (choice), Price per instance-hour (number), Instances held (number), Hours serving traffic (number), Hours idle but still billed (optional) (number), Model storage cost (optional) (number), Fixed platform fee (optional) (number), Price as of (optional) (date), Price source (optional) (text)
    Result:
    A main result with a supporting breakdown where relevant.
  • AI Cost per Request Calculator

    Address:
    /tools/ai-cost-per-request-calculator
    Category:
    Professional & Industry
    Description:
    Divide an AI cost you already know by the requests it covered.
    Keywords:
    ai cost per request, divide an ai cost you already know by the requests it covered, to get a unit cost., ai machine learning, ml engineer
    Inputs:
    Currency (choice), Total AI cost for the period (number), Requests in the period (number), Price as of (optional) (date), Price source (optional) (text)
    Result:
    A main result with a supporting breakdown where relevant.
  • AI Unit Economics Calculator

    Address:
    /tools/ai-unit-economics-calculator
    Category:
    Professional & Industry
    Description:
    Compare what a customer pays with the AI and variable cost they cause.
    Keywords:
    ai saas unit economics, compare what a customer pays with the ai and other variable cost they cause, per period., ai machine learning, ml engineer
    Inputs:
    Currency (choice), Revenue per customer for the period (number), AI cost per customer (number), Other variable cost per customer (optional) (number), Price as of (optional) (date), Price source (optional) (text)
    Result:
    A main result with a supporting breakdown where relevant.
  • Rebar Quantity Calculator

    Address:
    /tools/rebar-quantity-calculator
    Category:
    Construction
    Description:
    Calculate rebar quantity step by step: Bars each way = floor(clear span ÷ spacing) + 1.
    Keywords:
    rebar quantity calculator
    Inputs:
    Slab length (number), Slab width (number), Bar spacing (centre to centre) (number), Edge cover (number), Bar diameter (number), Layers (mats) (number), Waste allowance (number)
    Result:
    A main result with a supporting breakdown where relevant.
  • Blended Team Rate Calculator

    Address:
    /tools/blended-team-rate-calculator
    Category:
    Professional & Industry
    Description:
    One hourly rate for a mixed team, weighted by hours.
    Keywords:
    blended rate, team rate, weighted average
    Inputs:
    Currency (choice), Rate per hour — role 1 (number), Hours — role 1 (number), Rate per hour — role 2 (number), Hours — role 2 (number), Rate per hour — role 3 (number), Hours — role 3 (number), Rate per hour — role 4 (number), Hours — role 4 (number)
    Result:
    A main result with a supporting breakdown where relevant.
  • Employee Cost Calculator

    Address:
    /tools/employee-cost-calculator
    Category:
    Professional & Industry
    Description:
    Total annual employer cost of an employee, and the cost per paid hour.
    Keywords:
    employee cost, employer cost, cost per hour, payroll
    Inputs:
    Currency (choice), Annual salary or wages (number), Benefits paid by the employer (number), Payroll taxes (number), Insurance and statutory cover (number), Equipment and software (number), Training and certification (number), Annual paid hours (number)
    Result:
    A main result with a supporting breakdown where relevant.
  • Consultant Pay Rate Calculator

    Address:
    /tools/consultant-pay-rate-calculator
    Category:
    Professional & Industry
    Description:
    Work back from a client bill rate to the pay rate, with margin and markup kept apart.
    Keywords:
    consultant pay rate, bill rate, margin, markup
    Inputs:
    Currency (choice), Client bill rate per hour (number), Pricing method (choice), Margin or markup (number), Employer burden on pay (number)
    Result:
    A main result with a supporting breakdown where relevant.
  • Billable Hours Calculator

    Address:
    /tools/billable-hours-calculator
    Category:
    Professional & Industry
    Description:
    Scheduled hours less leave, holidays and non-billable work.
    Keywords:
    billable hours, capacity, available hours
    Inputs:
    Weeks in the year worked (number), Scheduled hours per week (number), Annual leave hours (number), Public holiday hours (number), Training hours (number), Internal and admin hours (number)
    Result:
    A main result with a supporting breakdown where relevant.
  • Utilization Rate Calculator

    Address:
    /tools/utilization-rate-calculator
    Category:
    Professional & Industry
    Description:
    Billable hours as a share of available hours.
    Keywords:
    utilization rate, utilisation, billable
    Inputs:
    Billable hours (number), Available hours (number)
    Result:
    A main result with a supporting breakdown where relevant.
  • Realization Rate Calculator

    Address:
    /tools/realization-rate-calculator
    Category:
    Professional & Industry
    Description:
    How much of the standard value of work was actually billed.
    Keywords:
    realization rate, write-off, standard value
    Inputs:
    Currency (choice), Hours worked (number), Standard rate per hour (number), Amount actually billed (number)
    Result:
    A main result with a supporting breakdown where relevant.
  • Effective Bill Rate Calculator

    Address:
    /tools/effective-bill-rate-calculator
    Category:
    Professional & Industry
    Description:
    Revenue per hour worked, not just per hour billed.
    Keywords:
    effective bill rate, revenue per hour
    Inputs:
    Currency (choice), Revenue billed (number), Total hours worked (number), Of which billable (number)
    Result:
    A main result with a supporting breakdown where relevant.
  • After-Hours Rate Calculator

    Address:
    /tools/after-hours-rate-calculator
    Category:
    Professional & Industry
    Description:
    Premium rate and cost for work outside standard hours.
    Keywords:
    after hours rate, premium pay, overtime rate
    Inputs:
    Currency (choice), Standard rate per hour (number), After-hours multiplier (number), Standard hours (number), After-hours hours (number)
    Result:
    A main result with a supporting breakdown where relevant.
  • On-Call Cost Calculator

    Address:
    /tools/on-call-cost-calculator
    Category:
    Professional & Industry
    Description:
    Cost of a standby rota and the call-outs that come with it.
    Keywords:
    on-call cost, standby pay, call-out
    Inputs:
    Currency (choice), Standby hours per period (number), Standby rate per hour (number), Call-outs per period (number), Hours per call-out (number), Call-out rate per hour (number), Number of periods (number)
    Result:
    A main result with a supporting breakdown where relevant.
  • Rate Card Calculator

    Address:
    /tools/rate-card-calculator
    Category:
    Professional & Industry
    Description:
    Turn a loaded hourly cost into a published rate, and see the margin after discount.
    Keywords:
    rate card, cost plus pricing, hourly rate
    Inputs:
    Currency (choice), Loaded cost per hour (number), Pricing method (choice), Margin or markup (number), Client discount (number), Round the published rate (choice)
    Result:
    A main result with a supporting breakdown where relevant.
  • Project Labor Cost Calculator

    Address:
    /tools/project-labor-cost-calculator
    Category:
    Professional & Industry
    Description:
    Add up what the people on a project cost, role by role.
    Keywords:
    project labour cost, add up what the people on a project cost, using each role's own loaded hourly cost., it professional services, project manager
    Inputs:
    Currency (choice), Role 1 — loaded cost per hour (number), Role 1 — hours on the project (number), Role 2 — loaded cost per hour (number), Role 2 — hours on the project (number), Role 3 — loaded cost per hour (number), Role 3 — hours on the project (number)
    Result:
    A main result with a supporting breakdown where relevant.
  • Project Gross Margin Calculator

    Address:
    /tools/project-gross-margin-calculator
    Category:
    Professional & Industry
    Description:
    See what share of a project's revenue survives its delivery cost.
    Keywords:
    project gross margin, see what share of a project's revenue is left after its direct delivery cost., it professional services, project manager
    Inputs:
    Currency (choice), Project revenue (number), Direct project cost (number)
    Result:
    A main result with a supporting breakdown where relevant.
  • Project Net Margin Calculator

    Address:
    /tools/project-net-margin-calculator
    Category:
    Professional & Industry
    Description:
    See what a project leaves after direct, overhead and administrative cost.
    Keywords:
    project net margin, see what a project leaves after direct cost, allocated overhead and administrative cost., it professional services, project manager
    Inputs:
    Currency (choice), Project revenue (number), Direct project cost (number), Allocated overhead (optional) (number), Selling, admin and other allocated cost (optional) (number)
    Result:
    A main result with a supporting breakdown where relevant.
  • Fixed-Fee Project Quote Calculator

    Address:
    /tools/fixed-fee-project-quote-calculator
    Category:
    Professional & Industry
    Description:
    Turn an estimated project cost into a fixed fee at your margin or markup.
    Keywords:
    fixed-fee project quote, turn an estimated project cost into a fixed fee at a chosen margin or markup., it professional services, it consultant
    Inputs:
    Currency (choice), Estimated project cost (number), Contingency reserve (optional) (number), Pricing method (choice), Margin or markup (number)
    Result:
    A main result with a supporting breakdown where relevant.
  • Ohm's Law Calculator

    Address:
    /tools/ohms-law-calculator
    Category:
    Electrical
    Description:
    Calculate ohm's law step by step: V = I × R.
    Keywords:
    ohm's law calculator
    Inputs:
    Solve for (choice), Voltage (number), Current (number), Resistance (number)
    Result:
    A main result with a supporting breakdown where relevant.
  • Time and Materials Quote Calculator

    Address:
    /tools/time-and-materials-quote-calculator
    Category:
    Professional & Industry
    Description:
    Quote an hourly engagement with expenses and materials shown separately.
    Keywords:
    time-and-materials quote, quote a project billed by the hour, with expenses and materials charged separately., it professional services, it consultant
    Inputs:
    Currency (choice), Estimated hours (number), Bill rate per hour (number), Pass-through expenses (optional) (number), Markup on expenses (optional) (number), Materials and licences (optional) (number)
    Result:
    A main result with a supporting breakdown where relevant.
  • Retainer Pricing Calculator

    Address:
    /tools/retainer-pricing-calculator
    Category:
    Professional & Industry
    Description:
    Price a monthly retainer and the rate for hours beyond it.
    Keywords:
    monthly retainer fee, price a monthly retainer from the hours it includes, and show the effective rate and the rate for extra hours., it professional services, it consultant
    Inputs:
    Currency (choice), Hours included each month (number), Standard rate per hour (number), Retainer discount (optional) (number), Rate for hours beyond the retainer (number), Monthly cost to deliver the retainer (number)
    Result:
    A main result with a supporting breakdown where relevant.
  • Managed Services Pricing Calculator

    Address:
    /tools/managed-services-pricing-calculator
    Category:
    Professional & Industry
    Description:
    Price a per-device or per-user service from its cost to serve.
    Keywords:
    managed services price per unit, price a per-device or per-user managed service from its cost to serve and a chosen margin or markup., it professional services, it manager
    Inputs:
    Currency (choice), Monthly cost to serve one unit (number), Units under management (number), Onboarding cost to recover (optional) (number), Months to recover onboarding over (number), Pricing method (choice), Margin or markup (number)
    Result:
    A main result with a supporting breakdown where relevant.
  • MSP Cost Calculator

    Address:
    /tools/msp-cost-calculator
    Category:
    Professional & Industry
    Description:
    Work out the monthly cost of running a managed service, per unit served.
    Keywords:
    managed service cost per unit served, work out what it costs each month to run a managed service, and what that is per device, user or site., it professional services, it manager
    Inputs:
    Currency (choice), Monthly service labour cost (number), Software, tools and licences (optional) (number), Vendor and hardware cost (optional) (number), Other direct delivery cost (optional) (number), Overhead applied to direct cost (optional) (number), Units served (devices, users or sites) (number)
    Result:
    A main result with a supporting breakdown where relevant.
  • Support Contract Pricing Calculator

    Address:
    /tools/support-contract-pricing-calculator
    Category:
    Professional & Industry
    Description:
    Price a support contract from ticket volume and handling time.
    Keywords:
    support contract price, price a support contract from expected ticket volume, handling time and the loaded cost of support staff., it professional services, it manager
    Inputs:
    Currency (choice), Tickets expected each month (number), Average handling minutes per ticket (number), Loaded cost per support hour (number), Monthly tooling and licence cost (optional) (number), Overhead applied to direct cost (optional) (number), Pricing method (choice), Margin or markup (number)
    Result:
    A main result with a supporting breakdown where relevant.
  • SLA Cost Calculator

    Address:
    /tools/sla-cost-calculator
    Category:
    Professional & Industry
    Description:
    Cost the coverage a service level agreement promises.
    Keywords:
    cost of meeting a service level, work out what it costs each month to staff the coverage a service level agreement promises., it professional services, it manager
    Inputs:
    Currency (choice), Covered hours each month (number), People on duty during covered hours (number), Loaded cost per staffed hour (number), Standby hours each month (number), Standby pay per hour (number), Monthly monitoring and tooling cost (optional) (number)
    Result:
    A main result with a supporting breakdown where relevant.
  • Resource Mix Cost Calculator

    Address:
    /tools/resource-mix-cost-calculator
    Category:
    Professional & Industry
    Description:
    Find the blended hourly cost of a junior, mid and senior delivery mix.
    Keywords:
    blended cost of a resource mix, find the blended hourly cost of a delivery team made up of junior, mid-level and senior people., it professional services, project manager
    Inputs:
    Currency (choice), Total project hours (number), Junior share of hours (number), Junior loaded cost per hour (number), Mid-level share of hours (number), Mid-level loaded cost per hour (number), Senior share of hours (number), Senior loaded cost per hour (number)
    Result:
    A main result with a supporting breakdown where relevant.
  • Cost to Serve Calculator

    Address:
    /tools/cost-to-serve-calculator
    Category:
    Professional & Industry
    Description:
    Work out what each customer, order or account costs to serve.
    Keywords:
    cost to serve a customer, work out what it costs to serve each customer, order or account, and what margin is left when revenue is entered., it professional services, operations manager
    Inputs:
    Currency (choice), Service and delivery labour cost (number), Support and account management (optional) (number), Software, tools and platform cost (optional) (number), Delivery, travel and logistics (optional) (number), Overhead applied to direct cost (optional) (number), Customers, orders or accounts served (number), Revenue from those customers (number)
    Result:
    A main result with a supporting breakdown where relevant.
  • Function Point Productivity Calculator

    Address:
    /tools/function-point-productivity-calculator
    Category:
    Professional & Industry
    Description:
    Measure how many hours each delivered function point actually took.
    Keywords:
    function point delivery rate, measure how much effort a delivered function point actually took, using your own recorded hours., software engineering, software engineer
    Inputs:
    Function points delivered (number), Effort spent (number), Hours in one person-month (number)
    Result:
    A main result with a supporting breakdown where relevant.
  • Cost per Function Point Calculator

    Address:
    /tools/cost-per-function-point-calculator
    Category:
    Professional & Industry
    Description:
    Express what a delivery cost in money per unit of functional size.
    Keywords:
    cost per function point, express what a delivery cost in money per unit of functional size., software engineering, software engineer
    Inputs:
    Currency (choice), Total project cost (number), Function points delivered (number)
    Result:
    A main result with a supporting breakdown where relevant.
  • Function Point Effort Calculator

    Address:
    /tools/function-point-effort-calculator
    Category:
    Professional & Industry
    Description:
    Turn a function point count into effort using your own delivery rate.
    Keywords:
    function point effort estimate, turn a function point count into an effort estimate using your own delivery rate., software engineering, software engineer
    Inputs:
    Function points to build (number), Your own hours per function point (number), Hours in one person-month (number)
    Result:
    A main result with a supporting breakdown where relevant.
  • COCOMO II Cost Calculator

    Address:
    /tools/cocomo-ii-cost-calculator
    Category:
    Professional & Industry
    Description:
    Cost a COCOMO II effort estimate at your own person-month cost.
    Keywords:
    cocomo ii development cost, price a development estimate by costing cocomo ii effort at your own person-month cost., software engineering, software engineer
    Inputs:
    Currency (choice), Size (number), Sum of the five scale factors (number), Product of the effort multipliers (number), Loaded cost of one person-month (number), Tools, licences and other non-labour cost (optional) (number)
    Result:
    A main result with a supporting breakdown where relevant.
  • COCOMO II Schedule Calculator

    Address:
    /tools/cocomo-ii-schedule-calculator
    Category:
    Professional & Industry
    Description:
    Estimate calendar time with the published COCOMO II schedule equation.
    Keywords:
    cocomo ii schedule, estimate the calendar time a development effort needs under the published schedule equation., software engineering, software engineer
    Inputs:
    Size (number), Sum of the five scale factors (number), Product of the effort multipliers (number), Required schedule compression (number)
    Result:
    A main result with a supporting breakdown where relevant.
  • KSLOC Calculator

    Address:
    /tools/ksloc-calculator
    Category:
    Professional & Industry
    Description:
    Size software in thousands of source lines, counted or converted.
    Keywords:
    software size in ksloc, express software size in thousands of source lines, either counted directly or converted from function points., software engineering, software engineer
    Inputs:
    Sizing method (choice), Source lines of code (number), Function points (number), Your own lines of code per function point (number)
    Result:
    A main result with a supporting breakdown where relevant.
  • Software Team Size Calculator

    Address:
    /tools/software-team-size-calculator
    Category:
    Professional & Industry
    Description:
    Find the average team size an effort and schedule imply.
    Keywords:
    average software team size, find the average number of people a development effort needs over its schedule., software engineering, software engineer
    Inputs:
    Estimated effort (number), Planned schedule (number)
    Result:
    A main result with a supporting breakdown where relevant.
  • Software Development Cost Calculator

    Address:
    /tools/software-development-cost-calculator
    Category:
    Professional & Industry
    Description:
    Cost a build including tools, overhead and a contingency reserve.
    Keywords:
    software development cost, cost a development effort including tools, infrastructure, overhead and a contingency reserve., software engineering, software engineer
    Inputs:
    Currency (choice), Estimated effort (number), Loaded cost of one person-month (number), Tools and licences (optional) (number), Infrastructure and environments (optional) (number), Overhead applied to labour (optional) (number), Contingency reserve (optional) (number)
    Result:
    A main result with a supporting breakdown where relevant.
  • Software Project Schedule Calculator

    Address:
    /tools/software-project-schedule-calculator
    Category:
    Professional & Industry
    Description:
    Turn effort into a schedule, by the published model or by your staffing.
    Keywords:
    software project schedule, turn an effort estimate into a calendar schedule, by the published model or by the staff actually available., software engineering, software engineer
    Inputs:
    Estimation model (choice), Estimated effort (number), COCOMO II scale exponent (number), People available (number)
    Result:
    A main result with a supporting breakdown where relevant.
  • Software Maintenance Cost Calculator

    Address:
    /tools/software-maintenance-cost-calculator
    Category:
    Professional & Industry
    Description:
    Estimate a year of maintenance from how much of the system changes.
    Keywords:
    cocomo ii software maintenance cost, estimate what a year of maintaining an existing system costs, from how much of it changes., software engineering, software engineer
    Inputs:
    Currency (choice), Size of the existing system (number), Code added in a year (number), Code modified in a year (number), Sum of the five scale factors (number), Product of the effort multipliers (number), Loaded cost of one person-month (number)
    Result:
    A main result with a supporting breakdown where relevant.
  • Bug Fix Cost Calculator

    Address:
    /tools/bug-fix-cost-calculator
    Category:
    Professional & Industry
    Description:
    Work out what fixing a set of defects costs to fix, retest and release.
    Keywords:
    defect correction cost, work out what a set of defects costs to diagnose, fix, retest and release., software engineering, software engineer
    Inputs:
    Currency (choice), Defects to fix (number), Hours to diagnose and fix one defect (number), Loaded cost per engineer hour (number), Retest and review hours per defect (optional) (number), Release and deployment cost (optional) (number)
    Result:
    A main result with a supporting breakdown where relevant.
  • Technical Debt Cost Calculator

    Address:
    /tools/technical-debt-cost-calculator
    Category:
    Professional & Industry
    Description:
    Value technical debt as remediation cost and annual carrying cost.
    Keywords:
    technical debt principal and interest, put a figure on what your technical debt would cost to clear, and what carrying it costs each year., software engineering, software engineer
    Inputs:
    Currency (choice), Hours to remediate the debt (number), Loaded cost per engineer hour (number), Hours it took to build the system (optional) (number), Extra hours lost each month to the debt (optional) (number)
    Result:
    A main result with a supporting breakdown where relevant.
  • Project Cost Calculator

    Address:
    /tools/project-cost-calculator
    Category:
    Professional & Industry
    Description:
    Build a total project cost from labour, materials, travel, overhead and contingency.
    Keywords:
    total project cost with overhead and contingency, build a project cost from labour, materials, software, travel and subcontractors, then apply overhead and a contingency reserve., it professional services, project manager
    Inputs:
    Currency (choice), Labour cost (number), Materials (optional) (number), Software and tools (optional) (number), Travel (optional) (number), Subcontractors (optional) (number), Overhead applied to direct cost (optional) (number), Contingency reserve (optional) (number)
    Result:
    A main result with a supporting breakdown where relevant.
  • Cloud Compute Cost Calculator

    Address:
    /tools/cloud-compute-cost-calculator
    Category:
    Professional & Industry
    Description:
    Cost virtual machine hours at the price on your own bill.
    Keywords:
    cloud compute cost, cost the compute instances a workload runs on for a period, at your own rate card., cloud finops, finops practitioner
    Inputs:
    Currency (choice), Price per instance-hour (number), Instances running (number), Hours in the period (number), Discount already agreed (optional) (number), Price as of (optional) (date), Price source (optional) (text)
    Result:
    A main result with a supporting breakdown where relevant.
  • Cloud Storage Cost Calculator

    Address:
    /tools/cloud-storage-cost-calculator
    Category:
    Professional & Industry
    Description:
    Cost stored data, retrieval and other storage charges you enter.
    Keywords:
    cloud storage cost, cost stored data, and any retrieval, for a period at your own rate card., cloud finops, finops practitioner
    Inputs:
    Currency (choice), Price per GB-month (number), Data stored (number), Months in the period (number), Data retrieved (optional) (number), Price per GB retrieved (optional) (number), Other storage charges (optional) (number), Price as of (optional) (date), Price source (optional) (text)
    Result:
    A main result with a supporting breakdown where relevant.
  • Cloud Data Transfer Cost Calculator

    Address:
    /tools/cloud-data-transfer-cost-calculator
    Category:
    Professional & Industry
    Description:
    Cost egress at your own price per GB, less any allowance you hold.
    Keywords:
    cloud data transfer cost, cost the data leaving or crossing your cloud environment in a period., cloud finops, finops practitioner
    Inputs:
    Currency (choice), Price per GB transferred (number), Data transferred (number), Free allowance (optional) (number), Price as of (optional) (date), Price source (optional) (text)
    Result:
    A main result with a supporting breakdown where relevant.
  • Cloud Request Cost Calculator

    Address:
    /tools/cloud-request-cost-calculator
    Category:
    Professional & Industry
    Description:
    Cost API or object requests from your own price per million.
    Keywords:
    cloud request cost, cost per-request charges such as object storage operations or api gateway calls., cloud finops, finops practitioner
    Inputs:
    Currency (choice), Price per million requests (number), Requests in the period (number), Free requests (optional) (number), Price as of (optional) (date), Price source (optional) (text)
    Result:
    A main result with a supporting breakdown where relevant.
  • Serverless Cost Calculator

    Address:
    /tools/serverless-cost-calculator
    Category:
    Professional & Industry
    Description:
    Cost function invocations and GB-seconds at your own prices.
    Keywords:
    serverless cost, cost a function workload charged per invocation and per gb-second., cloud finops, finops practitioner
    Inputs:
    Currency (choice), Price per million invocations (number), Price per GB-second (number), Invocations in the period (number), Average duration (number), Memory allocated (number), Free invocations (optional) (number), Free GB-seconds (optional) (number), Price as of (optional) (date), Price source (optional) (text)
    Result:
    A main result with a supporting breakdown where relevant.
  • Container Cost Calculator

    Address:
    /tools/container-cost-calculator
    Category:
    Professional & Industry
    Description:
    Cost container tasks charged per vCPU-hour and per GB-hour.
    Keywords:
    container cost, cost container tasks charged per vcpu-hour and per gb-hour., cloud finops, finops practitioner
    Inputs:
    Currency (choice), Price per vCPU-hour (number), Price per GB-hour of memory (number), Tasks or containers running (number), vCPU per task (number), Memory per task (number), Hours in the period (number), Other charges (optional) (number), Price as of (optional) (date), Price source (optional) (text)
    Result:
    A main result with a supporting breakdown where relevant.
  • Kubernetes Cost Calculator

    Address:
    /tools/kubernetes-cost-calculator
    Category:
    Professional & Industry
    Description:
    Cost cluster nodes, the control plane, storage and networking.
    Keywords:
    kubernetes cluster cost, cost a managed kubernetes cluster: nodes, control plane, storage and network., cloud finops, finops practitioner
    Inputs:
    Currency (choice), Price per node-hour (number), Nodes in the cluster (number), Hours in the period (number), Price per cluster-hour for the control plane (optional) (number), Clusters (number), Persistent storage cost (optional) (number), Load balancer and network cost (optional) (number), Price as of (optional) (date), Price source (optional) (text)
    Result:
    A main result with a supporting breakdown where relevant.
  • Cloud Database Cost Calculator

    Address:
    /tools/cloud-database-cost-calculator
    Category:
    Professional & Industry
    Description:
    Cost managed database instances, storage, backup and I/O.
    Keywords:
    cloud database cost, cost a managed database: instance hours, storage, backups and i/o charges., cloud finops, finops practitioner
    Inputs:
    Currency (choice), Price per instance-hour (number), Database instances (number), Hours in the period (number), Price per GB-month of storage (optional) (number), Storage provisioned (optional) (number), Backup cost (optional) (number), I/O or request charges (optional) (number), Price as of (optional) (date), Price source (optional) (text)
    Result:
    A main result with a supporting breakdown where relevant.
  • Cloud TCO Calculator

    Address:
    /tools/cloud-tco-calculator
    Category:
    Professional & Industry
    Description:
    Total a cloud platform's recurring and one-off cost over a period.
    Keywords:
    cloud total cost of ownership, add up what a cloud platform costs over several years, recurring and one-off., cloud finops, finops practitioner
    Inputs:
    Currency (choice), Months covered (number), Compute cost per month (number), Storage cost per month (optional) (number), Network and data transfer per month (optional) (number), Software licences per month (optional) (number), Support plan per month (optional) (number), Staff and operations per month (optional) (number), One-off migration cost (optional) (number), One-off training cost (optional) (number), Price as of (optional) (date), Price source (optional) (text)
    Result:
    A main result with a supporting breakdown where relevant.
  • Cloud Budget Calculator

    Address:
    /tools/cloud-budget-calculator
    Category:
    Professional & Industry
    Description:
    Project spend to period end and compare it with the budget.
    Keywords:
    cloud budget tracking, see whether this period's cloud spend is tracking to budget, and what daily spend keeps it there., cloud finops, finops practitioner
    Inputs:
    Currency (choice), Budget for the period (number), Spend so far (number), Days elapsed (number), Days in the period (number), Price as of (optional) (date), Price source (optional) (text)
    Result:
    A main result with a supporting breakdown where relevant.
  • Cloud Forecast Calculator

    Address:
    /tools/cloud-forecast-calculator
    Category:
    Professional & Industry
    Description:
    Project future cloud spend with a growth model you choose.
    Keywords:
    cloud cost forecast, project cloud cost forward from today's spend using a growth model you choose., cloud finops, finops practitioner
    Inputs:
    Currency (choice), Growth model (choice), Cost in the latest period (number), Growth per period (number), Periods ahead (number), Price as of (optional) (date), Price source (optional) (text)
    Result:
    A main result with a supporting breakdown where relevant.
  • Cloud Cost Allocation Calculator

    Address:
    /tools/cloud-cost-allocation-calculator
    Category:
    Professional & Industry
    Description:
    Split shared cloud cost by a driver you choose.
    Keywords:
    cloud cost allocation, split shared cloud cost across teams or products using a driver you choose., cloud finops, finops practitioner
    Inputs:
    Currency (choice), Shared cost to allocate (number), This team's share of the driver (number), Total driver across everyone (number), Direct cost owned by this team (optional) (number), Price as of (optional) (date), Price source (optional) (text)
    Result:
    A main result with a supporting breakdown where relevant.
  • Workload Cost Model Calculator

    Address:
    /tools/workload-cost-model-calculator
    Category:
    Professional & Industry
    Description:
    Total a workload from the cost components you enter.
    Keywords:
    workload cost model, build up the cost of one workload component by component, and express it per business unit., cloud finops, finops practitioner
    Inputs:
    Currency (choice), Compute (number), Storage (optional) (number), Data transfer (optional) (number), Requests and API calls (optional) (number), Databases (optional) (number), Licences and third-party services (optional) (number), Support and operations (optional) (number), Anything else (optional) (number), Business units delivered (optional) (number), Price as of (optional) (date), Price source (optional) (text)
    Result:
    A main result with a supporting breakdown where relevant.
  • Cost per API Request Calculator

    Address:
    /tools/cost-per-api-request-calculator
    Category:
    Professional & Industry
    Description:
    Express infrastructure cost as cost per request served.
    Keywords:
    cost per api request, express infrastructure cost as a cost per api request served., cloud finops, finops practitioner
    Inputs:
    Currency (choice), Total cost for the period (number), Requests served (number), Price as of (optional) (date), Price source (optional) (text)
    Result:
    A main result with a supporting breakdown where relevant.
  • Cost per GB Calculator

    Address:
    /tools/cost-per-gb-calculator
    Category:
    Professional & Industry
    Description:
    Express infrastructure cost as cost per gigabyte and per terabyte.
    Keywords:
    cost per gigabyte, express cost as a rate per gigabyte stored, processed or transferred., cloud finops, finops practitioner
    Inputs:
    Currency (choice), Total cost for the period (number), Gigabytes (number), Price as of (optional) (date), Price source (optional) (text)
    Result:
    A main result with a supporting breakdown where relevant.
  • Reserved Capacity Savings Calculator

    Address:
    /tools/reserved-capacity-savings-calculator
    Category:
    Professional & Industry
    Description:
    Compare reserved capacity with on-demand at the usage you expect.
    Keywords:
    reserved capacity savings, check whether reserving capacity actually saves money at the usage you really have., cloud finops, finops practitioner
    Inputs:
    Currency (choice), On-demand price per hour (number), Reserved price per hour (number), Upfront payment (optional) (number), Hours in the term (number), Instances reserved (number), Share of those hours you actually use (number), Price as of (optional) (date), Price source (optional) (text)
    Result:
    A main result with a supporting breakdown where relevant.
  • Commitment Savings Calculator

    Address:
    /tools/commitment-savings-calculator
    Category:
    Professional & Industry
    Description:
    Value a spend commitment, counting commitment you do not use.
    Keywords:
    commitment savings, work out what a spend commitment saves once any unused commitment is counted., cloud finops, finops practitioner
    Inputs:
    Currency (choice), Usage per period, valued at on-demand prices (number), Discount the commitment gives (number), Amount committed per period (number), Periods in the term (number), Price as of (optional) (date), Price source (optional) (text)
    Result:
    A main result with a supporting breakdown where relevant.
  • Right-Sizing Savings Calculator

    Address:
    /tools/right-sizing-savings-calculator
    Category:
    Professional & Industry
    Description:
    Compare today's resource cost with a proposed smaller size.
    Keywords:
    right-sizing savings, value a resizing proposal over a period, net of what the change itself costs., cloud finops, finops practitioner
    Inputs:
    Currency (choice), Current cost per resource per month (number), Cost per resource per month after resizing (number), Resources being resized (number), Months to count (number), One-off cost of making the change (optional) (number), Price as of (optional) (date), Price source (optional) (text)
    Result:
    A main result with a supporting breakdown where relevant.
  • Job Cost Calculator

    Address:
    /tools/job-cost-calculator
    Category:
    Professional & Industry
    Description:
    Total a job from its materials, labour and the overhead your own rate applies.
    Keywords:
    job cost, total what one job cost, with overhead applied at your own rate., manufacturing, manufacturing engineer
    Inputs:
    Currency (choice), Direct materials charged to the job (number), Direct labour charged to the job (number), Your overhead rate per base unit (number), Allocation base the job used (number), Other direct costs (optional) (number), Good units produced on the job (optional) (number)
    Result:
    A main result with a supporting breakdown where relevant.
  • Unit Cost Calculator

    Address:
    /tools/unit-cost-calculator
    Category:
    Professional & Industry
    Description:
    Divide manufacturing cost by good units to get the cost of one unit.
    Keywords:
    manufacturing unit cost, work out what one good unit cost to produce in a period., manufacturing, manufacturing engineer
    Inputs:
    Currency (choice), Total manufacturing cost for the period (number), Good units produced (number), Units started (optional) (number)
    Result:
    A main result with a supporting breakdown where relevant.
  • Batch Cost Calculator

    Address:
    /tools/batch-cost-calculator
    Category:
    Professional & Industry
    Description:
    Cost a batch from per-unit costs plus the costs the batch carries once.
    Keywords:
    batch cost, cost a production batch, separating what varies with size from what the batch carries once., manufacturing, manufacturing engineer
    Inputs:
    Currency (choice), Units in the batch (number), Direct material per unit (number), Direct labour per unit (number), Overhead applied per unit (optional) (number), Setup cost for the batch (optional) (number), Other batch cost (optional) (number)
    Result:
    A main result with a supporting breakdown where relevant.
  • Direct Material Cost Calculator

    Address:
    /tools/direct-material-cost-calculator
    Category:
    Professional & Industry
    Description:
    Cost material from quantity, your own price and any waste allowance.
    Keywords:
    direct material cost, cost the material a production run needs, including any waste allowance you set., manufacturing, manufacturing engineer
    Inputs:
    Currency (choice), Material needed per unit (number), Price per material unit (number), Units produced (number), Waste allowance (optional) (number), Freight and handling (optional) (number), Salvage or scrap credit (optional) (number)
    Result:
    A main result with a supporting breakdown where relevant.
  • Direct Labor Cost Calculator

    Address:
    /tools/direct-labor-cost-calculator
    Category:
    Professional & Industry
    Description:
    Cost labour hours at your own rate, with any overtime premium separate.
    Keywords:
    direct labour cost, cost the labour a production run needs at your own labour cost per hour., manufacturing, manufacturing engineer
    Inputs:
    Currency (choice), Labour hours per unit (number), Units produced (number), Labour cost per hour (number), Overtime hours worked (optional) (number), Overtime premium per hour (optional) (number)
    Result:
    A main result with a supporting breakdown where relevant.
  • Manufacturing Overhead Calculator

    Address:
    /tools/manufacturing-overhead-calculator
    Category:
    Professional & Industry
    Description:
    Total the indirect production costs you enter, and show them per base unit.
    Keywords:
    manufacturing overhead, total the factory overhead for a period from the lines you actually have., manufacturing, manufacturing engineer
    Inputs:
    Currency (choice), Indirect materials (optional) (number), Indirect labour and supervision (optional) (number), Factory utilities (optional) (number), Depreciation on plant and equipment (optional) (number), Maintenance and repairs (optional) (number), Factory rent, rates and insurance (optional) (number), Other manufacturing overhead (optional) (number), Allocation base for the period (optional) (number)
    Result:
    A main result with a supporting breakdown where relevant.
  • Machine Hour Rate Calculator

    Address:
    /tools/machine-hour-rate-calculator
    Category:
    Professional & Industry
    Description:
    Work out what one hour on a machine costs to run.
    Keywords:
    machine hour rate, work out what one hour on a machine costs, to charge jobs by machine time., manufacturing, manufacturing engineer
    Inputs:
    Currency (choice), Depreciation for the period (optional) (number), Power and fuel (optional) (number), Maintenance and spares (optional) (number), Tooling and consumables (optional) (number), Floor space and insurance (optional) (number), Other machine cost (optional) (number), Machine hours in the period (number)
    Result:
    A main result with a supporting breakdown where relevant.
  • Standard Cost Calculator

    Address:
    /tools/standard-cost-calculator
    Category:
    Professional & Industry
    Description:
    Build a standard cost card from your own standards, never a benchmark.
    Keywords:
    standard cost per unit, build a standard cost card for one unit from your own standards., manufacturing, manufacturing engineer
    Inputs:
    Currency (choice), Standard material quantity per unit (number), Standard material price (number), Standard labour hours per unit (number), Standard labour rate per hour (number), Standard overhead rate per labour hour (optional) (number), Units planned (optional) (number)
    Result:
    A main result with a supporting breakdown where relevant.
  • Actual Cost Calculator

    Address:
    /tools/actual-cost-calculator
    Category:
    Professional & Industry
    Description:
    Total the costs actually recorded against production.
    Keywords:
    actual manufacturing cost, total what production actually cost, and what that was per good unit., manufacturing, manufacturing engineer
    Inputs:
    Currency (choice), Actual direct material cost (number), Actual direct labour cost (number), Actual manufacturing overhead (number), Other actual cost (optional) (number), Good units produced (number)
    Result:
    A main result with a supporting breakdown where relevant.
  • Variance Analysis Calculator

    Address:
    /tools/variance-analysis-calculator
    Category:
    Professional & Industry
    Description:
    Split the gap from standard into price, quantity, rate and efficiency variances.
    Keywords:
    material and labour variance analysis, split the difference from standard into price, quantity, rate and efficiency causes., manufacturing, manufacturing engineer
    Inputs:
    Currency (choice), Actual material quantity used (number), Actual price per material unit (number), Standard quantity allowed for the output (number), Standard price per material unit (number), Actual labour hours (number), Actual labour rate per hour (number), Standard hours allowed for the output (number), Standard labour rate per hour (number)
    Result:
    A main result with a supporting breakdown where relevant.
  • Scrap Cost Calculator

    Address:
    /tools/scrap-cost-calculator
    Category:
    Professional & Industry
    Description:
    Cost units written off, less anything recovered, plus disposal.
    Keywords:
    scrap cost, cost the output that had to be scrapped, net of anything recovered., manufacturing, quality engineer
    Inputs:
    Currency (choice), Units scrapped (number), Cost invested in each unit when it was scrapped (number), Salvage recovered (optional) (number), Disposal cost (optional) (number), Good units produced (optional) (number)
    Result:
    A main result with a supporting breakdown where relevant.
  • Rework Cost Calculator

    Address:
    /tools/rework-cost-calculator
    Category:
    Professional & Industry
    Description:
    Cost the extra labour, material and overhead spent making units good.
    Keywords:
    rework cost, cost putting defective output back through the process., manufacturing, quality engineer
    Inputs:
    Currency (choice), Units reworked (number), Rework labour hours per unit (number), Labour cost per hour (number), Replacement material per unit (optional) (number), Overhead applied per reworked unit (optional) (number), Fixed rework cost (optional) (number)
    Result:
    A main result with a supporting breakdown where relevant.
  • Yield Cost Calculator

    Address:
    /tools/yield-cost-calculator
    Category:
    Professional & Industry
    Description:
    Show what yield loss does to the cost of each unit that survives.
    Keywords:
    yield cost, see what yield loss does to the cost of each unit that survives., manufacturing, quality engineer
    Inputs:
    Currency (choice), Units started (number), Good units produced (number), Cost per unit started (number), Salvage recovered from lost units (optional) (number)
    Result:
    A main result with a supporting breakdown where relevant.
  • Setup Cost Calculator

    Address:
    /tools/setup-cost-calculator
    Category:
    Professional & Industry
    Description:
    Cost a changeover in setup labour, lost production and start-up scrap.
    Keywords:
    setup cost, cost a changeover, and see what it adds to each unit in the batch., manufacturing, manufacturing engineer
    Inputs:
    Currency (choice), Setup hours per changeover (number), Setup labour cost per hour (number), Cost of lost production per hour (optional) (number), Material scrapped during setup (optional) (number), Setups in the period (optional) (number), Units per batch (optional) (number)
    Result:
    A main result with a supporting breakdown where relevant.
  • Manufacturing Quote Calculator

    Address:
    /tools/manufacturing-quote-calculator
    Category:
    Professional & Industry
    Description:
    Price a quote from cost on a margin or a mark-up, chosen explicitly.
    Keywords:
    manufacturing quote price, price a quote from your cost, on a margin or a mark-up — never both., manufacturing, manufacturing engineer
    Inputs:
    Currency (choice), Material cost (number), Labour cost (number), Overhead applied (number), Other cost (optional) (number), Price by margin or by mark-up (choice), Margin or mark-up (number), Units quoted (optional) (number)
    Result:
    A main result with a supporting breakdown where relevant.
  • Manufacturing Bid Calculator

    Address:
    /tools/manufacturing-bid-calculator
    Category:
    Professional & Industry
    Description:
    Build a bid from quantity, tooling, freight, contingency and profit.
    Keywords:
    manufacturing bid price, build a bid for a quantity, spreading one-off costs and showing contingency separately., manufacturing, manufacturing engineer
    Inputs:
    Currency (choice), Units in the bid (number), Material per unit (number), Labour per unit (number), Overhead per unit (optional) (number), Tooling or other one-off cost (optional) (number), Freight and packaging (optional) (number), Contingency (optional) (number), Price by margin or by mark-up (choice), Margin or mark-up (number)
    Result:
    A main result with a supporting breakdown where relevant.
  • Make or Buy Calculator

    Address:
    /tools/make-or-buy-calculator
    Category:
    Professional & Industry
    Description:
    Compare making a part with buying it, and find the cross-over volume.
    Keywords:
    make-or-buy comparison, compare making a part in-house with buying it, at the volume you actually need., manufacturing, manufacturing engineer
    Inputs:
    Currency (choice), Units required (number), Cost to make, per unit (number), Fixed cost avoided if you stop making (optional) (number), One-off cost of making (tooling, setup) (optional) (number), Purchase price per unit (number), Freight and duty per unit (optional) (number), One-off cost of buying (qualification, transition) (optional) (number)
    Result:
    A main result with a supporting breakdown where relevant.
  • Production Capacity Calculator

    Address:
    /tools/production-capacity-calculator
    Category:
    Professional & Industry
    Description:
    Work out how much your machines can produce in a period.
    Keywords:
    production capacity, work out how much a set of machines can produce in a period., manufacturing, industrial engineer
    Inputs:
    Machines or lines running (number), Hours per shift (number), Shifts per day (number), Days in the period (number), Units one machine makes per running hour (number), Planned downtime in the period (optional) (number)
    Result:
    A main result with a supporting breakdown where relevant.
  • Capacity Utilization Calculator

    Address:
    /tools/capacity-utilization-calculator
    Category:
    Professional & Industry
    Description:
    See how much of your capacity the period's output actually used.
    Keywords:
    capacity utilisation, see how much of your capacity the period's output actually used., manufacturing, industrial engineer
    Inputs:
    Actual output in the period (number), Capacity for the same period (number), Your own target utilisation (optional) (number)
    Result:
    A main result with a supporting breakdown where relevant.
  • Throughput Calculator

    Address:
    /tools/throughput-calculator
    Category:
    Professional & Industry
    Description:
    Measure units per hour of elapsed time, stops included.
    Keywords:
    throughput, measure how many units come off the line per hour of elapsed time., manufacturing, industrial engineer
    Inputs:
    Units produced in the period (number), Length of the period, including every stop (number), Good units, if you want good throughput as well (optional) (number)
    Result:
    A main result with a supporting breakdown where relevant.
  • Cycle Time Calculator

    Address:
    /tools/cycle-time-calculator
    Category:
    Professional & Industry
    Description:
    Measure how long one unit actually takes on the line.
    Keywords:
    cycle time, measure how long one unit actually takes on the line., manufacturing, industrial engineer
    Inputs:
    Run time in the period (number), Units produced in that run time (number)
    Result:
    A main result with a supporting breakdown where relevant.
  • Production Rate Calculator

    Address:
    /tools/production-rate-calculator
    Category:
    Professional & Industry
    Description:
    Find output per running hour, and per shift and week if you want.
    Keywords:
    production rate, find output per running hour, and what that means per shift and per week., manufacturing, industrial engineer
    Inputs:
    Units produced (number), Hours the process was actually running (number), Hours per shift (optional) (number), Shifts per week (optional) (number)
    Result:
    A main result with a supporting breakdown where relevant.
  • Line Balance Calculator

    Address:
    /tools/line-balance-calculator
    Category:
    Professional & Industry
    Description:
    See how evenly the work is spread across the stations on a line.
    Keywords:
    line balance efficiency, see how evenly work is spread across the stations on a line., manufacturing, industrial engineer
    Inputs:
    Station 1 work content (number), Station 2 work content (number), Station 3 work content (optional) (number), Station 4 work content (optional) (number), Station 5 work content (optional) (number), Station 6 work content (optional) (number), Station 7 work content (optional) (number), Station 8 work content (optional) (number), Your takt time (optional) (number)
    Result:
    A main result with a supporting breakdown where relevant.
  • Bottleneck Calculator

    Address:
    /tools/bottleneck-calculator
    Category:
    Professional & Industry
    Description:
    Find the station that limits the line and what the line can produce.
    Keywords:
    bottleneck and line capacity, find which station limits the line and what the line can therefore produce., manufacturing, industrial engineer
    Inputs:
    Station 1 capacity (number), Station 2 capacity (number), Station 3 capacity (optional) (number), Station 4 capacity (optional) (number), Station 5 capacity (optional) (number), Station 6 capacity (optional) (number)
    Result:
    A main result with a supporting breakdown where relevant.
  • Work in Process Calculator

    Address:
    /tools/work-in-process-calculator
    Category:
    Professional & Industry
    Description:
    Count and value the units still on the floor at the end of a period.
    Keywords:
    work in process, count and value the units still on the floor at the end of a period., manufacturing, industrial engineer
    Inputs:
    Currency (choice), Units started in the period (number), Units completed in the period (number), Units scrapped in the period (optional) (number), Cost invested in each unit still in process (optional) (number)
    Result:
    A main result with a supporting breakdown where relevant.
  • Production Lead Time Calculator

    Address:
    /tools/production-lead-time-calculator
    Category:
    Professional & Industry
    Description:
    Add up how long an order takes from receipt to despatch.
    Keywords:
    production lead time, add up how long an order really takes from receipt to despatch., manufacturing, industrial engineer
    Inputs:
    Run time (number), Setup and changeover time (optional) (number), Order processing time (optional) (number), Queue time before the work starts (optional) (number), Move time between operations (optional) (number), Wait time after the work (optional) (number), Shipping time to the customer (optional) (number)
    Result:
    A main result with a supporting breakdown where relevant.
  • Equipment Utilization Calculator

    Address:
    /tools/equipment-utilization-calculator
    Category:
    Professional & Industry
    Description:
    Measure how much of the period a machine spent operating.
    Keywords:
    equipment utilisation, measure how much of the period a machine spent actually operating., manufacturing, industrial engineer
    Inputs:
    Hours the equipment was operating (number), Total time in the period (number), Downtime in the period (optional) (number), Standby time in the period (optional) (number)
    Result:
    A main result with a supporting breakdown where relevant.
  • Machine Availability Calculator

    Address:
    /tools/machine-availability-calculator
    Category:
    Professional & Industry
    Description:
    Measure availability from a shift's records, or from MTBF and MTTR.
    Keywords:
    machine availability, measure availability from a shift's records, or from mtbf and mttr., manufacturing, industrial engineer
    Inputs:
    How do you want to measure availability? (choice), Planned production time (number), Unplanned downtime inside that time (number), Mean time between failures (MTBF) (number), Mean time to repair (MTTR) (number)
    Result:
    A main result with a supporting breakdown where relevant.
  • Little's Law Calculator

    Address:
    /tools/littles-law-calculator
    Category:
    Professional & Industry
    Description:
    Relate work in process, throughput and lead time in a stable system.
    Keywords:
    little's law, relate average work in process, average throughput and average lead time for a stable system., manufacturing, industrial engineer
    Inputs:
    What do you want to work out? (choice), Average throughput (number), Average lead time (number), Average work in process (number)
    Result:
    A main result with a supporting breakdown where relevant.
  • Defects Per Unit Calculator

    Address:
    /tools/defects-per-unit-calculator
    Category:
    Professional & Industry
    Description:
    Work out defects per unit from your own defect and unit counts.
    Keywords:
    defects per unit, express how many defects a process produces for each unit it makes., quality six sigma, quality engineer
    Inputs:
    Defects found (number), Units inspected (number)
    Result:
    A main result with a supporting breakdown where relevant.
  • First Pass Yield Calculator

    Address:
    /tools/first-pass-yield-calculator
    Category:
    Professional & Industry
    Description:
    Find the share of units that passed with no rework of any kind.
    Keywords:
    first pass yield, measure the share of units that met specification with no rework of any kind., quality six sigma, quality engineer
    Inputs:
    Units started (number), Units passing first time (number)
    Result:
    A main result with a supporting breakdown where relevant.
  • Rolled Throughput Yield Calculator

    Address:
    /tools/rolled-throughput-yield-calculator
    Category:
    Professional & Industry
    Description:
    Multiply step yields to find the chance a unit passes every step.
    Keywords:
    rolled throughput yield, find the probability that a unit passes every step of a process with no rework at any of them., quality six sigma, quality engineer
    Inputs:
    Step 1 yield (number), Step 2 yield (number), Step 3 yield (optional) (number), Step 4 yield (optional) (number), Step 5 yield (optional) (number), Step 6 yield (optional) (number), Step 7 yield (optional) (number), Step 8 yield (optional) (number)
    Result:
    A main result with a supporting breakdown where relevant.
  • Scrap Rate Calculator

    Address:
    /tools/scrap-rate-calculator
    Category:
    Professional & Industry
    Description:
    Work out the share of units started that had to be discarded.
    Keywords:
    scrap rate, measure the share of units started that had to be discarded., quality six sigma, quality engineer
    Inputs:
    Units started (number), Units scrapped (number), Units reworked (optional) (number)
    Result:
    A main result with a supporting breakdown where relevant.
  • Rework Rate Calculator

    Address:
    /tools/rework-rate-calculator
    Category:
    Professional & Industry
    Description:
    Work out the share of units that needed rework before they could pass.
    Keywords:
    rework rate, measure the share of units that needed rework before they could pass., quality six sigma, quality engineer
    Inputs:
    Units produced (number), Units reworked (number)
    Result:
    A main result with a supporting breakdown where relevant.
  • Cp Calculator

    Address:
    /tools/cp-calculator
    Category:
    Professional & Industry
    Description:
    Compare specification width with short-term process spread.
    Keywords:
    process capability (cp), compare the width of a specification with the short-term spread of a process, ignoring centring., quality six sigma, quality engineer
    Inputs:
    Upper specification limit (number), Lower specification limit (number), Within-subgroup standard deviation (number)
    Result:
    A main result with a supporting breakdown where relevant.
  • Pp Calculator

    Address:
    /tools/pp-calculator
    Category:
    Professional & Industry
    Description:
    Compare specification width with long-term process spread.
    Keywords:
    process performance (pp), compare the width of a specification with the long-term spread of a process, ignoring centring., quality six sigma, quality engineer
    Inputs:
    Upper specification limit (number), Lower specification limit (number), Overall standard deviation (number)
    Result:
    A main result with a supporting breakdown where relevant.
  • Cooling Load Calculator

    Address:
    /tools/cooling-load-calculator
    Category:
    Thermal & HVAC
    Description:
    Calculate cooling load step by step: Q = ΣUA × ΔT + 0.33 × n × V × ΔT + internal gains (sensible load, W).
    Keywords:
    cooling load calculator
    Inputs:
    Envelope U × A (sum over walls, roof, windows) (number), Design indoor–outdoor temperature difference (number), Room volume (number), Air changes per hour (number), Internal gains (people, lights, equipment) (number)
    Result:
    A main result with a supporting breakdown where relevant.
  • Electrical Power Calculator

    Address:
    /tools/electrical-power-calculator
    Category:
    Electrical
    Description:
    Calculate electrical power step by step: P = V × I = I² × R = V² ÷ R (DC or resistive AC using RMS values).
    Keywords:
    electrical power calculator
    Inputs:
    Known values (choice), Voltage (number), Current (number), Resistance (number)
    Result:
    A main result with a supporting breakdown where relevant.
  • Torque Calculator

    Address:
    /tools/torque-calculator
    Category:
    Mechanical
    Description:
    Calculate torque step by step: τ = F × r × sin θ.
    Keywords:
    torque calculator
    Inputs:
    Force (number), Lever arm distance (number), Angle between force and arm (number)
    Result:
    A main result with a supporting breakdown where relevant.
  • Pipe Velocity Calculator

    Address:
    /tools/pipe-velocity-calculator
    Category:
    Fluid
    Description:
    Calculate pipe velocity step by step: v = Q ÷ A = 4Q ÷ (π D²).
    Keywords:
    pipe velocity calculator
    Inputs:
    Flow rate (number), Pipe inside diameter (number)
    Result:
    A main result with a supporting breakdown where relevant.
  • Asphalt Quantity Calculator

    Address:
    /tools/asphalt-quantity-calculator
    Category:
    Construction
    Description:
    Calculate asphalt quantity step by step: Tonnes = length × width × thickness × compacted density × (1 + waste).
    Keywords:
    asphalt quantity calculator
    Inputs:
    Length (number), Width (number), Compacted thickness (number), Compacted density (number), Waste allowance (number)
    Result:
    A main result with a supporting breakdown where relevant.
  • Energy Calculator

    Address:
    /tools/energy-calculator
    Category:
    Electrical
    Description:
    Calculate energy step by step: E (kWh) = P (W) × t (h) ÷ 1,000.
    Keywords:
    energy calculator
    Inputs:
    Power (number), Running time per day (number), Number of days (number)
    Result:
    A main result with a supporting breakdown where relevant.
  • Reynolds Number Calculator

    Address:
    /tools/reynolds-number-calculator
    Category:
    Fluid
    Description:
    Calculate reynolds number step by step: Re = ρ × v × D ÷ μ.
    Keywords:
    reynolds number calculator
    Inputs:
    Fluid density ρ (number), Velocity (number), Characteristic length / pipe diameter (number), Dynamic viscosity μ (number)
    Result:
    A main result with a supporting breakdown where relevant.
  • Heating Load Calculator

    Address:
    /tools/heating-load-calculator
    Category:
    Thermal & HVAC
    Description:
    Calculate heating load step by step: Q = ΣUA × ΔT + 0.33 × n × V × ΔT − internal gains (not below zero).
    Keywords:
    heating load calculator
    Inputs:
    Envelope U × A (sum over walls, roof, windows) (number), Design indoor–outdoor temperature difference (number), Room volume (number), Air changes per hour (number), Internal gains (people, lights, equipment) (number)
    Result:
    A main result with a supporting breakdown where relevant.
  • Work Calculator

    Address:
    /tools/work-calculator
    Category:
    Mechanical
    Description:
    Calculate work step by step: W = F × d × cos θ.
    Keywords:
    work calculator
    Inputs:
    Force (number), Distance moved (number), Angle between force and motion (number)
    Result:
    A main result with a supporting breakdown where relevant.
  • Excavation Calculator

    Address:
    /tools/excavation-calculator
    Category:
    Construction
    Description:
    Calculate excavation step by step: V = D ÷ 6 × (A_bottom + 4·A_mid + A_top) (prismoidal formula).
    Keywords:
    excavation calculator
    Inputs:
    Base length (number), Base width (number), Depth (number), Side slope (horizontal per 1 vertical) (number), Swell factor (number)
    Result:
    A main result with a supporting breakdown where relevant.
  • Backfill Calculator

    Address:
    /tools/backfill-calculator
    Category:
    Construction
    Description:
    Calculate backfill step by step: Compacted fill = excavated − structure volume.
    Keywords:
    backfill calculator
    Inputs:
    Excavated (bank) volume (number), Volume occupied by structure / pipe (number), Compaction (shrinkage) factor (number)
    Result:
    A main result with a supporting breakdown where relevant.
  • Pressure Drop Calculator

    Address:
    /tools/pressure-drop-calculator
    Category:
    Fluid
    Description:
    Calculate pressure drop step by step: ΔP = (f × L ÷ D + ΣK) × ρv² ÷ 2 (Darcy–Weisbach).
    Keywords:
    pressure drop calculator
    Inputs:
    Pipe length (number), Inside diameter (number), Mean velocity (number), Fluid density (number), Dynamic viscosity (number), Absolute roughness ε (number), Sum of fitting loss coefficients ΣK (optional) (number)
    Result:
    A main result with a supporting breakdown where relevant.
  • Voltage Divider Calculator

    Address:
    /tools/voltage-divider-calculator
    Category:
    Electrical
    Description:
    Calculate voltage divider step by step: Vout = Vin × R2 ÷ (R1 + R2).
    Keywords:
    voltage divider calculator
    Inputs:
    Input voltage (number), R1 (top resistor) (number), R2 (bottom resistor) (number), Load resistance on output (optional) (number)
    Result:
    A main result with a supporting breakdown where relevant.
  • Energy Consumption Calculator

    Address:
    /tools/energy-consumption-calculator
    Category:
    Thermal & HVAC
    Description:
    Calculate energy consumption step by step: E = P_rated × load factor × hours/day × days/year.
    Keywords:
    energy consumption calculator
    Inputs:
    Rated power (number), Average load factor (number), Operating hours per day (number), Operating days per year (number)
    Result:
    A main result with a supporting breakdown where relevant.
  • Mechanical Power Calculator

    Address:
    /tools/mechanical-power-calculator
    Category:
    Mechanical
    Description:
    Calculate mechanical power step by step: P = W ÷ t, or P = F × v.
    Keywords:
    mechanical power calculator
    Inputs:
    Method (choice), Work (number), Time (number), Force (number), Speed (number)
    Result:
    A main result with a supporting breakdown where relevant.
  • Pump Head Calculator

    Address:
    /tools/pump-head-calculator
    Category:
    Fluid
    Description:
    Calculate pump head step by step: H = Δz + h_f + (P_d − P_s) ÷ (ρg).
    Keywords:
    pump head calculator
    Inputs:
    Static lift (discharge − suction level) (number), Friction head loss (number), Discharge pressure required (gauge) (number), Suction pressure (gauge) (number), Fluid density (number)
    Result:
    A main result with a supporting breakdown where relevant.
  • Stress Calculator

    Address:
    /tools/stress-calculator
    Category:
    Mechanical
    Description:
    Calculate stress step by step: σ = F ÷ A.
    Keywords:
    stress calculator
    Inputs:
    Axial force (number), Cross-sectional area (number)
    Result:
    A main result with a supporting breakdown where relevant.
  • Equipment Energy Cost Calculator

    Address:
    /tools/equipment-energy-cost-calculator
    Category:
    Thermal & HVAC
    Description:
    Calculate equipment energy cost step by step: Cost = kWh × price per kWh + fixed or demand charges.
    Keywords:
    equipment energy cost calculator
    Inputs:
    Currency (choice), Energy used (number), Energy price (number), Fixed / demand charges for the period (optional) (number)
    Result:
    A main result with a supporting breakdown where relevant.
  • Masonry Calculator

    Address:
    /tools/masonry-calculator
    Category:
    Construction
    Description:
    Calculate masonry step by step: Units/m² = 1 ÷ [(L + joint) × (H + joint)].
    Keywords:
    masonry calculator
    Inputs:
    Wall length (number), Wall height (number), Openings area (doors/windows) (number), Unit length (number), Unit height (number), Mortar joint (number), Waste allowance (number)
    Result:
    A main result with a supporting breakdown where relevant.
  • Current Calculator

    Address:
    /tools/current-calculator
    Category:
    Electrical
    Description:
    Calculate current step by step: I = V ÷ R = P ÷ V = √(P ÷ R).
    Keywords:
    current calculator
    Inputs:
    Known values (choice), Voltage (number), Resistance (number), Power (number)
    Result:
    A main result with a supporting breakdown where relevant.
  • Pump Efficiency Calculator

    Address:
    /tools/pump-efficiency-calculator
    Category:
    Fluid
    Description:
    Calculate pump efficiency step by step: η = ρ g Q H ÷ P_shaft.
    Keywords:
    pump efficiency calculator
    Inputs:
    Measured flow (number), Measured total head (number), Fluid density (number), Measured shaft power (number)
    Result:
    A main result with a supporting breakdown where relevant.
  • Resistance Calculator

    Address:
    /tools/resistance-calculator
    Category:
    Electrical
    Description:
    Calculate resistance step by step: R = V ÷ I, or for a conductor R = ρ × L ÷ A (A in m²).
    Keywords:
    resistance calculator
    Inputs:
    Method (choice), Voltage (number), Current (number), Resistivity ρ (number), Conductor length (number), Cross-sectional area (number)
    Result:
    A main result with a supporting breakdown where relevant.
  • Drywall Calculator

    Address:
    /tools/drywall-calculator
    Category:
    Construction
    Description:
    Calculate drywall step by step: Sheets = ⌈(perimeter × height + ceiling − openings) × (1 + waste) ÷ sheet area⌉.
    Keywords:
    drywall calculator
    Inputs:
    Room perimeter (number), Wall height (number), Ceiling area (0 if none) (number), Openings area (number), Sheet width (number), Sheet length (number), Waste allowance (number)
    Result:
    A main result with a supporting breakdown where relevant.
  • Strain Calculator

    Address:
    /tools/strain-calculator
    Category:
    Mechanical
    Description:
    Calculate strain step by step: ε = ΔL ÷ L₀ (dimensionless).
    Keywords:
    strain calculator
    Inputs:
    Original length (number), Change in length (number)
    Result:
    A main result with a supporting breakdown where relevant.
  • Framing Calculator

    Address:
    /tools/framing-calculator
    Category:
    Construction
    Description:
    Calculate framing step by step: Common studs = floor(length ÷ spacing) + 1.
    Keywords:
    framing calculator
    Inputs:
    Wall length (number), Stud spacing (number), Stud length (number), Number of openings (number), Number of plates (top + bottom) (number), Waste allowance (number)
    Result:
    A main result with a supporting breakdown where relevant.
  • Young's Modulus Calculator

    Address:
    /tools/youngs-modulus-calculator
    Category:
    Mechanical
    Description:
    Calculate young's modulus step by step: E = σ ÷ ε.
    Keywords:
    young's modulus calculator
    Inputs:
    Stress (number), Strain (number)
    Result:
    A main result with a supporting breakdown where relevant.
  • Series Resistance Calculator

    Address:
    /tools/series-resistance-calculator
    Category:
    Electrical
    Description:
    Calculate series resistance step by step: R_total = R1 + R2 + … + Rn.
    Keywords:
    series resistance calculator
    Inputs:
    R1 (number), R2 (number), R3 (optional) (number), R4 (optional) (number), R5 (optional) (number), Supply voltage (optional) (number)
    Result:
    A main result with a supporting breakdown where relevant.
  • Parallel Resistance Calculator

    Address:
    /tools/parallel-resistance-calculator
    Category:
    Electrical
    Description:
    Calculate parallel resistance step by step: 1 ÷ R_total = 1 ÷ R1 + 1 ÷ R2 + … + 1 ÷ Rn.
    Keywords:
    parallel resistance calculator
    Inputs:
    R1 (number), R2 (number), R3 (optional) (number), R4 (optional) (number), R5 (optional) (number)
    Result:
    A main result with a supporting breakdown where relevant.
  • Labor Hours Calculator

    Address:
    /tools/labor-hours-calculator
    Category:
    Construction
    Description:
    Calculate labor hours step by step: Crew hours = quantity ÷ (production rate × efficiency).
    Keywords:
    labor hours calculator
    Inputs:
    Work quantity (number), Production rate (number), Crew size (number), Efficiency factor (number)
    Result:
    A main result with a supporting breakdown where relevant.
  • Beam Deflection Calculator

    Address:
    /tools/beam-deflection-calculator
    Category:
    Mechanical
    Description:
    Calculate beam deflection step by step: Simply supported: PL³/48EI (centre point), 5wL⁴/384EI (uniform).
    Keywords:
    beam deflection calculator
    Inputs:
    Beam and load (choice), Load (P in N, or w in N/m) (number), Span length (number), Young's modulus E (number), Second moment of area I (number)
    Result:
    A main result with a supporting breakdown where relevant.
  • Equipment Hours Calculator

    Address:
    /tools/equipment-hours-calculator
    Category:
    Construction
    Description:
    Calculate equipment hours step by step: Machine hours = quantity ÷ (output × working minutes ÷ 60).
    Keywords:
    equipment hours calculator
    Inputs:
    Quantity to move or process (number), Equipment output (number), Job efficiency (working minutes per hour) (number), Number of machines (number)
    Result:
    A main result with a supporting breakdown where relevant.
  • Bending Stress Calculator

    Address:
    /tools/bending-stress-calculator
    Category:
    Mechanical
    Description:
    Calculate bending stress step by step: σ = M × c ÷ I = M ÷ S.
    Keywords:
    bending stress calculator
    Inputs:
    Bending moment (number), Distance from neutral axis to outer fibre (number), Second moment of area I (number)
    Result:
    A main result with a supporting breakdown where relevant.
  • Battery Runtime Calculator

    Address:
    /tools/battery-runtime-calculator
    Category:
    Electrical
    Description:
    Calculate battery runtime step by step: Runtime (h) = Capacity (Ah) × Voltage (V) × DoD × Efficiency ÷ Load (W).
    Keywords:
    battery runtime calculator
    Inputs:
    Battery capacity (number), Battery voltage (number), Load power (number), Usable depth of discharge (number), Inverter / converter efficiency (number)
    Result:
    A main result with a supporting breakdown where relevant.
  • Construction Cost Calculator

    Address:
    /tools/construction-cost-calculator
    Category:
    Construction
    Description:
    Calculate construction cost step by step: Direct = material qty × unit price + labor h × rate + equipment h × rate + subcontractor.
    Keywords:
    construction cost calculator
    Inputs:
    Currency (choice), Material quantity (number), Material unit price (number), Labor hours (number), Labor rate (number), Equipment hours (number), Equipment rate (number), Subcontractor amount (number), Overhead (number), Contingency (number), Profit (number), Profit applied as (choice)
    Result:
    A main result with a supporting breakdown where relevant.
  • Battery Energy Calculator

    Address:
    /tools/battery-energy-calculator
    Category:
    Electrical
    Description:
    Calculate battery energy step by step: Pack V = cell V × series count; pack Ah = cell Ah × parallel count; Energy (Wh) = pack V × pack Ah.
    Keywords:
    battery energy calculator
    Inputs:
    Capacity per cell or battery (number), Nominal voltage (number), Cells in series (number), Strings in parallel (number)
    Result:
    A main result with a supporting breakdown where relevant.
  • Shear Stress Calculator

    Address:
    /tools/shear-stress-calculator
    Category:
    Mechanical
    Description:
    Calculate shear stress step by step: Average τ = V ÷ A; rectangular beam max τ = 1.5V ÷ A; solid shaft τ = 16T ÷ (πd³).
    Keywords:
    shear stress calculator
    Inputs:
    Case (choice), Shear force V (or torque T in N·m) (number), Area (for V cases) (number), Shaft diameter (torsion) (number)
    Result:
    A main result with a supporting breakdown where relevant.
  • Buckling Calculator

    Address:
    /tools/buckling-calculator
    Category:
    Mechanical
    Description:
    Calculate buckling step by step: P_cr = π² × E × I ÷ (K × L)².
    Keywords:
    buckling calculator
    Inputs:
    End conditions (effective length factor K) (choice), Young's modulus E (number), Minimum second moment of area I (number), Column length (number)
    Result:
    A main result with a supporting breakdown where relevant.
  • Voltage Drop Calculator

    Address:
    /tools/voltage-drop-calculator
    Category:
    Electrical
    Description:
    Calculate voltage drop step by step: Single-phase / DC: Vd = 2 × I × R.
    Keywords:
    voltage drop calculator
    Inputs:
    System (choice), Supply voltage (number), Load current (number), One-way cable length (number), Conductor size (number), Conductor resistivity (number)
    Result:
    A main result with a supporting breakdown where relevant.
  • Contractor Bid Calculator

    Address:
    /tools/contractor-bid-calculator
    Category:
    Construction
    Description:
    Calculate contractor bid step by step: Bid = (direct + overhead + contingency) × (1 + markup), or ÷ (1 − margin).
    Keywords:
    contractor bid calculator
    Inputs:
    Currency (choice), Material quantity (number), Material unit price (number), Labor hours (number), Labor rate (number), Equipment hours (number), Equipment rate (number), Subcontractor amount (number), Overhead (number), Contingency (number), Profit (number), Profit applied as (choice)
    Result:
    A main result with a supporting breakdown where relevant.
  • Gear Ratio Calculator

    Address:
    /tools/gear-ratio-calculator
    Category:
    Mechanical
    Description:
    Calculate gear ratio step by step: Ratio = driven teeth ÷ driving teeth.
    Keywords:
    gear ratio calculator
    Inputs:
    Driving gear teeth (number), Driven gear teeth (number), Input torque (optional) (number)
    Result:
    A main result with a supporting breakdown where relevant.
  • Power Factor Calculator

    Address:
    /tools/power-factor-calculator
    Category:
    Electrical
    Description:
    Calculate power factor step by step: PF = P ÷ S = cos φ, and Q = √(S² − P²).
    Keywords:
    power factor calculator
    Inputs:
    Real power (number), Apparent power (number)
    Result:
    A main result with a supporting breakdown where relevant.
  • Subcontractor Quote Calculator

    Address:
    /tools/subcontractor-quote-calculator
    Category:
    Construction
    Description:
    Calculate subcontractor quote step by step: Levelled quote = quote + excluded items.
    Keywords:
    subcontractor quote calculator
    Inputs:
    Currency (choice), Subcontractor quote (number), Value of items excluded from the quote (number), Your handling / coordination markup (number), Retainage to hold back (number)
    Result:
    A main result with a supporting breakdown where relevant.
  • Gear Speed Calculator

    Address:
    /tools/gear-speed-calculator
    Category:
    Mechanical
    Description:
    Calculate gear speed step by step: N_out = N_in × T_driver ÷ T_driven.
    Keywords:
    gear speed calculator
    Inputs:
    Input speed (number), Driving gear teeth (number), Driven gear teeth (number)
    Result:
    A main result with a supporting breakdown where relevant.
  • Change Order Calculator

    Address:
    /tools/change-order-calculator
    Category:
    Construction
    Description:
    Calculate change order step by step: Net = added − deleted.
    Keywords:
    change order calculator
    Inputs:
    Currency (choice), Current contract value (number), Direct cost of added work (number), Direct cost of deleted work (number), Overhead on net change (number), Markup on net change (number)
    Result:
    A main result with a supporting breakdown where relevant.
  • Single Phase Power Calculator

    Address:
    /tools/single-phase-power-calculator
    Category:
    Electrical
    Description:
    Calculate single phase power step by step: P = V × I × PF; S = V × I.
    Keywords:
    single phase power calculator
    Inputs:
    Voltage (RMS) (number), Current (RMS) (number), Power factor (number)
    Result:
    A main result with a supporting breakdown where relevant.
  • Belt Speed Calculator

    Address:
    /tools/belt-speed-calculator
    Category:
    Mechanical
    Description:
    Calculate belt speed step by step: v = π × D × N ÷ 60 (D in m, N in rpm).
    Keywords:
    belt speed calculator
    Inputs:
    Driving pulley pitch diameter (number), Driving pulley speed (number), Driven pulley diameter (optional) (number)
    Result:
    A main result with a supporting breakdown where relevant.
  • Three Phase Power Calculator

    Address:
    /tools/three-phase-power-calculator
    Category:
    Electrical
    Description:
    Calculate three phase power step by step: P = √3 × V_LL × I_L × PF; S = √3 × V_LL × I_L.
    Keywords:
    three phase power calculator
    Inputs:
    Line-to-line voltage (number), Line current (number), Power factor (number)
    Result:
    A main result with a supporting breakdown where relevant.
  • Retainage Calculator

    Address:
    /tools/retainage-calculator
    Category:
    Construction
    Description:
    Calculate retainage step by step: Earned = contract × % complete.
    Keywords:
    retainage calculator
    Inputs:
    Currency (choice), Contract value (number), Work completed to date (number), Retainage rate (number), Previous payments made (number)
    Result:
    A main result with a supporting breakdown where relevant.
  • Transformer Calculator

    Address:
    /tools/transformer-calculator
    Category:
    Electrical
    Description:
    Calculate transformer step by step: Vs ÷ Vp = Ns ÷ Np, and for an ideal transformer Ip ÷ Is = Ns ÷ Np.
    Keywords:
    transformer calculator
    Inputs:
    Primary voltage (number), Primary turns (number), Secondary turns (number), Secondary load current (optional) (number)
    Result:
    A main result with a supporting breakdown where relevant.
  • Shaft Power Calculator

    Address:
    /tools/shaft-power-calculator
    Category:
    Mechanical
    Description:
    Calculate shaft power step by step: P = 2π × N × T ÷ 60 (N in rpm, T in N·m, P in W).
    Keywords:
    shaft power calculator
    Inputs:
    Torque (number), Speed (number)
    Result:
    A main result with a supporting breakdown where relevant.
  • Bearing Life Calculator

    Address:
    /tools/bearing-life-calculator
    Category:
    Mechanical
    Description:
    Calculate bearing life step by step: L10 = (C ÷ P)^p million revolutions (ISO 281); L10h = L10 × 10⁶ ÷ (60 × n).
    Keywords:
    bearing life calculator
    Inputs:
    Bearing type (choice), Basic dynamic load rating C (number), Equivalent dynamic load P (number), Speed (number)
    Result:
    A main result with a supporting breakdown where relevant.
  • LED Resistor Calculator

    Address:
    /tools/led-resistor-calculator
    Category:
    Electrical
    Description:
    Calculate led resistor step by step: R = (Vsupply − n × Vf) ÷ I_LED; resistor power P = (Vsupply − n × Vf) × I_LED.
    Keywords:
    led resistor calculator
    Inputs:
    Supply voltage (number), LED forward voltage (number), LED current (number), LEDs in series (number)
    Result:
    A main result with a supporting breakdown where relevant.
  • Velocity Calculator

    Address:
    /tools/velocity-calculator
    Category:
    Agile Delivery
    Description:
    Calculate Velocity step by step: Velocity = average of completed (done) story points over recent sprints.
    Keywords:
    velocity calculator
    Inputs:
    Completed points — sprint 1 (number), Completed points — sprint 2 (number), Completed points — sprint 3 (number), Completed points — sprint 4 (optional) (number), Completed points — sprint 5 (optional) (number)
    Result:
    A main result with a supporting breakdown where relevant.
  • Portfolio Cost Calculator

    Address:
    /tools/portfolio-cost-calculator
    Category:
    PMO
    Description:
    Calculate Portfolio Cost step by step: Portfolio cost = sum of project costs + shared portfolio costs.
    Keywords:
    portfolio cost calculator
    Inputs:
    Currency (symbol only, never converted) (choice), Project 1 cost (number), Project 2 cost (number), Project 3 cost (number), Project 4 cost (number), Project 5 cost (number), Portfolio office and shared costs (number)
    Result:
    A main result with a supporting breakdown where relevant.
  • Planned Value Calculator

    Address:
    /tools/planned-value-calculator
    Category:
    Earned Value
    Description:
    Calculate Planned Value step by step: PV = BAC × planned % complete at the status date.
    Keywords:
    planned value calculator
    Inputs:
    Currency (symbol only, never converted) (choice), Budget at completion (BAC) (number), Planned percent complete at status date (number)
    Result:
    A main result with a supporting breakdown where relevant.
  • Project Labor Estimate Calculator

    Address:
    /tools/project-labor-estimate-calculator
    Category:
    Project Estimation
    Description:
    Calculate Project Labor Estimate step by step: Direct hours = items × hours per item.
    Keywords:
    project labor estimate calculator
    Inputs:
    Number of work items (number), Estimated hours per item (number), Non-delivery time (meetings, reviews, rework) (number)
    Result:
    A main result with a supporting breakdown where relevant.
  • Project Duration Estimate Calculator

    Address:
    /tools/project-duration-estimate-calculator
    Category:
    Project Estimation
    Description:
    Calculate Project Duration Estimate step by step: PERT: E = (O + 4M + P) ÷ 6, σ = (P − O) ÷ 6.
    Keywords:
    project duration estimate calculator
    Inputs:
    Optimistic duration (O) (number), Most likely duration (M) (number), Pessimistic duration (P) (number)
    Result:
    A main result with a supporting breakdown where relevant.
  • Portfolio Capacity Calculator

    Address:
    /tools/portfolio-capacity-calculator
    Category:
    PMO
    Description:
    Calculate Portfolio Capacity step by step: Balance = capacity − (sum of project demand + business-as-usual demand).
    Keywords:
    portfolio capacity calculator
    Inputs:
    Available capacity (number), Demand — project 1 (number), Demand — project 2 (number), Demand — project 3 (number), Demand — project 4 (number), Business-as-usual demand (number)
    Result:
    A main result with a supporting breakdown where relevant.
  • Earned Value Calculator

    Address:
    /tools/earned-value-calculator
    Category:
    Earned Value
    Description:
    Calculate Earned Value step by step: EV = BAC × actual % complete.
    Keywords:
    earned value calculator
    Inputs:
    Currency (symbol only, never converted) (choice), Budget at completion (BAC) (number), Actual percent of work completed (number)
    Result:
    A main result with a supporting breakdown where relevant.
  • Agile Team Capacity Calculator

    Address:
    /tools/agile-team-capacity-calculator
    Category:
    Agile Delivery
    Description:
    Calculate Agile Team Capacity step by step: Capacity (hours) = (members × sprint days − absence days) × focus hours per day − members × event hours.
    Keywords:
    agile team capacity calculator
    Inputs:
    Team members (number), Working days in sprint (number), Focus hours per person per day (number), Total absence days across the team (number), Hours per person in sprint events (number)
    Result:
    A main result with a supporting breakdown where relevant.
  • Actual Cost (Earned Value) Calculator

    Address:
    /tools/earned-value-actual-cost-calculator
    Category:
    Earned Value
    Description:
    Calculate Actual Cost (Earned Value) step by step: AC = sum of all costs actually incurred for the work performed to the status date.
    Keywords:
    actual cost (earned value) calculator
    Inputs:
    Currency (symbol only, never converted) (choice), Labor cost incurred (number), Materials cost incurred (number), Equipment and services incurred (number), Other direct costs incurred (number)
    Result:
    A main result with a supporting breakdown where relevant.
  • Resource Capacity Calculator

    Address:
    /tools/resource-capacity-calculator
    Category:
    Project Estimation
    Description:
    Calculate Resource Capacity step by step: Capacity = people × (working days − leave) × hours per day × availability %.
    Keywords:
    resource capacity calculator
    Inputs:
    People (number), Working days in period (number), Hours per day (number), Leave and holidays per person (number), Share of time available for project work (number)
    Result:
    A main result with a supporting breakdown where relevant.
  • Project ROI Calculator

    Address:
    /tools/project-roi-calculator
    Category:
    PMO
    Description:
    Calculate Project ROI step by step: ROI = (benefits − ongoing costs − investment) ÷ investment.
    Keywords:
    project roi calculator
    Inputs:
    Currency (symbol only, never converted) (choice), Total project investment (number), Total expected benefits over the period (number), Ongoing costs over the same period (number), Benefit period (number)
    Result:
    A main result with a supporting breakdown where relevant.
  • Sprint Capacity Calculator

    Address:
    /tools/sprint-capacity-calculator
    Category:
    Agile Delivery
    Description:
    Calculate Sprint Capacity step by step: Sprint capacity (points) = average velocity × available person-days ÷ normal person-days.
    Keywords:
    sprint capacity calculator
    Inputs:
    Average velocity (number), Normal team person-days per sprint (number), Available person-days this sprint (number)
    Result:
    A main result with a supporting breakdown where relevant.
  • Project Prioritization Calculator

    Address:
    /tools/project-prioritization-calculator
    Category:
    PMO
    Description:
    Calculate Project Prioritization step by step: Weighted score = Σ (weight × score) with weights summing to 100%.
    Keywords:
    project prioritization calculator
    Inputs:
    Model (choice), Weight — criterion 1 (e.g. strategic fit) (number), Score — criterion 1 (1–10) (number), Weight — criterion 2 (e.g. value) (number), Score — criterion 2 (1–10) (number), Weight — criterion 3 (e.g. risk, higher = lower risk) (number), Score — criterion 3 (1–10) (number), WSJF: user/business value (number), WSJF: time criticality (number), WSJF: risk reduction / opportunity enablement (number), WSJF: job size (number)
    Result:
    A main result with a supporting breakdown where relevant.
  • Release Forecast Calculator

    Address:
    /tools/release-forecast-calculator
    Category:
    Agile Delivery
    Description:
    Calculate Release Forecast step by step: Sprints = remaining points ÷ velocity, rounded up, using both a low and a high velocity to give a range.
    Keywords:
    release forecast calculator
    Inputs:
    Remaining backlog (number), Low velocity (e.g. lowest recent) (number), High velocity (e.g. highest recent) (number), Sprint length (number)
    Result:
    A main result with a supporting breakdown where relevant.
  • Team Size Calculator

    Address:
    /tools/team-size-calculator
    Category:
    Project Estimation
    Description:
    Calculate Team Size step by step: FTE = total effort ÷ (duration × project hours per person per week).
    Keywords:
    team size calculator
    Inputs:
    Total effort (number), Target duration (number), Project hours per person per week (number)
    Result:
    A main result with a supporting breakdown where relevant.
  • Budget At Completion Calculator

    Address:
    /tools/budget-at-completion-calculator
    Category:
    Earned Value
    Description:
    Calculate Budget At Completion step by step: BAC = sum of the budgets of all work packages in the performance measurement baseline.
    Keywords:
    budget at completion calculator
    Inputs:
    Currency (symbol only, never converted) (choice), Work package 1 budget (number), Work package 2 budget (number), Work package 3 budget (number), Work package 4 budget (number), Work package 5 budget (number)
    Result:
    A main result with a supporting breakdown where relevant.
  • Cost Variance Calculator

    Address:
    /tools/cost-variance-calculator
    Category:
    Earned Value
    Description:
    Calculate Cost Variance step by step: CV = EV − AC.
    Keywords:
    cost variance calculator
    Inputs:
    Currency (symbol only, never converted) (choice), Earned value (EV) (number), Actual cost (AC) (number)
    Result:
    A main result with a supporting breakdown where relevant.
  • Project Budget Variance Calculator

    Address:
    /tools/project-budget-variance-calculator
    Category:
    PMO
    Description:
    Calculate Project Budget Variance step by step: Budget variance = budget − actual (or forecast).
    Keywords:
    project budget variance calculator
    Inputs:
    Currency (symbol only, never converted) (choice), Approved budget (number), Actual or forecast cost (number)
    Result:
    A main result with a supporting breakdown where relevant.
  • Agile Throughput Calculator

    Address:
    /tools/agile-throughput-calculator
    Category:
    Agile Delivery
    Description:
    Calculate Agile Throughput step by step: Throughput = items finished ÷ period length.
    Keywords:
    agile throughput calculator
    Inputs:
    Items finished (number), Period length (number), Average work in progress (optional) (number)
    Result:
    A main result with a supporting breakdown where relevant.
  • Project Budget Calculator

    Address:
    /tools/project-budget-calculator
    Category:
    Project Estimation
    Description:
    Calculate Project Budget step by step: Cost baseline = direct costs + contingency reserve.
    Keywords:
    project budget calculator
    Inputs:
    Currency (symbol only, never converted) (choice), Labor cost (number), Materials (number), Equipment and software (number), Subcontractors and vendors (number), Travel and other direct costs (number), Contingency reserve (number), Management reserve (number)
    Result:
    A main result with a supporting breakdown where relevant.
  • Schedule Variance Calculator

    Address:
    /tools/schedule-variance-calculator
    Category:
    Earned Value
    Description:
    Calculate Schedule Variance step by step: SV = EV − PV.
    Keywords:
    schedule variance calculator
    Inputs:
    Currency (symbol only, never converted) (choice), Earned value (EV) (number), Planned value (PV) (number)
    Result:
    A main result with a supporting breakdown where relevant.
  • Project Contingency Calculator

    Address:
    /tools/project-contingency-calculator
    Category:
    Project Estimation
    Description:
    Calculate Project Contingency step by step: Percentage: contingency = base × %.
    Keywords:
    project contingency calculator
    Inputs:
    Currency (symbol only, never converted) (choice), Method (choice), Base cost estimate (number), Contingency percentage (number), Risk 1 probability (number), Risk 1 cost impact (number), Risk 2 probability (number), Risk 2 cost impact (number), Risk 3 probability (number), Risk 3 cost impact (number)
    Result:
    A main result with a supporting breakdown where relevant.
  • Agile Cycle Time Calculator

    Address:
    /tools/agile-cycle-time-calculator
    Category:
    Agile Delivery
    Description:
    Calculate agile cycle time step by step: cycle time = finish date − start date, shown as average, median and 85th percentile.
    Keywords:
    agile cycle time calculator, kanban cycle time
    Inputs:
    Cycle time — item 1 (number), Item 2 (number), Item 3 (number), Item 4 (optional) (number), Item 5 (optional) (number), Item 6 (optional) (number)
    Result:
    A main result with a supporting breakdown where relevant.
  • Project Profit Calculator

    Address:
    /tools/project-profit-calculator
    Category:
    Project Estimation
    Description:
    Calculate Project Profit step by step: Markup: price = cost × (1 + markup).
    Keywords:
    project profit calculator
    Inputs:
    Currency (symbol only, never converted) (choice), Pricing method (choice), Total project cost (number), Margin or markup (number)
    Result:
    A main result with a supporting breakdown where relevant.
  • Lead Time Calculator

    Address:
    /tools/lead-time-calculator
    Category:
    Agile Delivery
    Description:
    Calculate Lead Time step by step: Lead time = delivery date − request date (when the customer asked).
    Keywords:
    lead time calculator
    Inputs:
    Lead time — item 1 (number), Item 2 (number), Item 3 (number), Item 4 (optional) (number), Item 5 (optional) (number), Item 6 (optional) (number)
    Result:
    A main result with a supporting breakdown where relevant.
  • CPI Calculator

    Address:
    /tools/cpi-calculator
    Category:
    Earned Value
    Description:
    Calculate CPI step by step: CPI = EV ÷ AC.
    Keywords:
    cpi calculator
    Inputs:
    Earned value (EV) (number), Actual cost (AC) (number)
    Result:
    A main result with a supporting breakdown where relevant.
  • SPI Calculator

    Address:
    /tools/spi-calculator
    Category:
    Earned Value
    Description:
    Calculate SPI step by step: SPI = EV ÷ PV.
    Keywords:
    spi calculator
    Inputs:
    Earned value (EV) (number), Planned value (PV) (number)
    Result:
    A main result with a supporting breakdown where relevant.
  • Schedule Forecast Calculator

    Address:
    /tools/schedule-forecast-calculator
    Category:
    Project Estimation
    Description:
    Calculate Schedule Forecast step by step: Forecast duration = planned duration ÷ SPI.
    Keywords:
    schedule forecast calculator
    Inputs:
    Planned duration (number), Time elapsed (number), Schedule performance index (SPI) (number)
    Result:
    A main result with a supporting breakdown where relevant.
  • EAC Calculator

    Address:
    /tools/eac-calculator
    Category:
    Earned Value
    Description:
    Calculate EAC with four documented models: BAC ÷ CPI, AC + (BAC − EV), AC + (BAC − EV) ÷ (CPI × SPI), and AC + bottom-up ETC.
    Keywords:
    eac calculator
    Inputs:
    Currency (symbol only, never converted) (choice), Budget at completion (BAC) (number), Earned value (EV) (number), Actual cost (AC) (number), Planned value (PV) (number), Bottom-up estimate to complete (optional) (number)
    Result:
    A main result with a supporting breakdown where relevant.
  • Completion Forecast Calculator

    Address:
    /tools/completion-forecast-calculator
    Category:
    Project Estimation
    Description:
    Calculate Completion Forecast step by step: Periods remaining = (total − done) ÷ (done ÷ periods elapsed − scope added per period).
    Keywords:
    completion forecast calculator
    Inputs:
    Total work (number), Work completed (number), Periods elapsed (number), Average scope added per period (number)
    Result:
    A main result with a supporting breakdown where relevant.
  • ETC Calculator

    Address:
    /tools/etc-calculator
    Category:
    Earned Value
    Description:
    Calculate ETC step by step: ETC = EAC − AC; or (BAC − EV) ÷ CPI; or BAC − EV at the budgeted rate.
    Keywords:
    etc calculator
    Inputs:
    Currency (symbol only, never converted) (choice), Method (choice), Estimate at completion (EAC) (number), Budget at completion (BAC) (number), Earned value (EV) (number), Actual cost (AC) (number)
    Result:
    A main result with a supporting breakdown where relevant.
  • VAC Calculator

    Address:
    /tools/vac-calculator
    Category:
    Earned Value
    Description:
    Calculate VAC step by step: VAC = BAC − EAC.
    Keywords:
    vac calculator
    Inputs:
    Currency (symbol only, never converted) (choice), Budget at completion (BAC) (number), Estimate at completion (EAC) (number)
    Result:
    A main result with a supporting breakdown where relevant.
  • TCPI Calculator

    Address:
    /tools/tcpi-calculator
    Category:
    Earned Value
    Description:
    Calculate TCPI step by step: TCPI (BAC) = (BAC − EV) ÷ (BAC − AC).
    Keywords:
    tcpi calculator
    Inputs:
    Budget at completion (BAC) (number), Earned value (EV) (number), Actual cost (AC) (number), Approved EAC (optional) (number)
    Result:
    A main result with a supporting breakdown where relevant.
  • Percent Complete Calculator

    Address:
    /tools/percent-complete-calculator
    Category:
    Earned Value
    Description:
    Calculate Percent Complete step by step: Percent complete = EV ÷ BAC (or units done ÷ total units).
    Keywords:
    percent complete calculator
    Inputs:
    Basis (choice), EV, units completed or AC (number), BAC, total units or EAC (number)
    Result:
    A main result with a supporting breakdown where relevant.
  • EOQ Calculator

    Address:
    /tools/eoq-calculator
    Category:
    Inventory
    Description:
    Calculate EOQ step by step: EOQ = √(2 × annual demand × cost per order ÷ holding cost per unit per year).
    Keywords:
    eoq calculator
    Inputs:
    Currency (symbol only, never converted) (choice), Annual demand (number), Cost per order (number), Holding cost per unit per year (number)
    Result:
    A main result with a supporting breakdown where relevant.
  • Revenue Forecast Calculator

    Address:
    /tools/revenue-forecast-calculator
    Category:
    FP&A
    Description:
    Calculate Revenue Forecast step by step: Revenueₙ = current revenue × (1 + growth rate)ⁿ.
    Keywords:
    revenue forecast calculator
    Inputs:
    Currency (symbol only, never converted) (choice), Current period revenue (number), Growth per period (your assumption) (number), Periods ahead (number)
    Result:
    A main result with a supporting breakdown where relevant.
  • Product Pricing Calculator

    Address:
    /tools/product-pricing-calculator
    Category:
    Business Pricing
    Description:
    Calculate Product Pricing step by step: Price = (materials + labor + overhead) × (1 + markup ÷ 100).
    Keywords:
    product pricing calculator
    Inputs:
    Currency (symbol only, never converted) (choice), Materials per unit (number), Direct labor per unit (number), Allocated overhead per unit (0 if none) (number), Markup on cost (your choice) (number)
    Result:
    A main result with a supporting breakdown where relevant.
  • ROIC Calculator

    Address:
    /tools/roic-calculator
    Category:
    Corporate Finance
    Description:
    Calculate ROIC step by step: ROIC = NOPAT ÷ invested capital, where NOPAT = EBIT × (1 − tax rate).
    Keywords:
    roic calculator
    Inputs:
    Currency (symbol only, never converted) (choice), Operating income (EBIT) (number), Tax rate (your rate — none assumed) (number), Invested capital (debt + equity − excess cash) (number)
    Result:
    A main result with a supporting breakdown where relevant.
  • COGS Calculator

    Address:
    /tools/cogs-calculator
    Category:
    Accounting & Costing
    Description:
    Calculate COGS step by step: COGS = beginning inventory + purchases − ending inventory.
    Keywords:
    cogs calculator
    Inputs:
    Currency (symbol only, never converted) (choice), Beginning inventory (number), Purchases (net, including freight-in) (number), Ending inventory (number)
    Result:
    A main result with a supporting breakdown where relevant.
  • Service Pricing Calculator

    Address:
    /tools/service-pricing-calculator
    Category:
    Business Pricing
    Description:
    Calculate Service Pricing step by step: Price = (hours × loaded hourly cost + expenses) ÷ (1 − target margin).
    Keywords:
    service pricing calculator
    Inputs:
    Currency (symbol only, never converted) (choice), Estimated hours (number), Loaded cost per hour (number), Pass-through expenses (0 if none) (number), Target margin on price (your choice) (number)
    Result:
    A main result with a supporting breakdown where relevant.
  • Reorder Point Calculator

    Address:
    /tools/reorder-point-calculator
    Category:
    Inventory
    Description:
    Calculate Reorder Point step by step: reorder point = average daily demand × lead time + safety stock.
    Keywords:
    reorder point calculator
    Inputs:
    Average daily demand (number), Lead time (number), Safety stock (enter 0 if none) (number)
    Result:
    A main result with a supporting breakdown where relevant.
  • Expense Forecast Calculator

    Address:
    /tools/expense-forecast-calculator
    Category:
    FP&A
    Description:
    Calculate Expense Forecast step by step: Forecast expenses = fixed costs + (variable % × forecast revenue) + one-off costs.
    Keywords:
    expense forecast calculator
    Inputs:
    Currency (symbol only, never converted) (choice), Fixed costs for the period (number), Forecast revenue for the period (number), Variable costs as % of revenue (your figure) (number), One-off costs (enter 0 if none) (number)
    Result:
    A main result with a supporting breakdown where relevant.
  • Gross Profit Calculator

    Address:
    /tools/gross-profit-calculator
    Category:
    Accounting & Costing
    Description:
    Calculate Gross Profit step by step: Gross profit = net revenue − cost of goods sold.
    Keywords:
    gross profit calculator
    Inputs:
    Currency (symbol only, never converted) (choice), Net revenue (number), Cost of goods sold (number)
    Result:
    A main result with a supporting breakdown where relevant.
  • ROA Calculator

    Address:
    /tools/roa-calculator
    Category:
    Corporate Finance
    Description:
    Calculate ROA step by step: Return on assets = net income ÷ average total assets × 100.
    Keywords:
    roa calculator
    Inputs:
    Currency (symbol only, never converted) (choice), Net income for the period (number), Total assets at start of period (number), Total assets at end of period (number)
    Result:
    A main result with a supporting breakdown where relevant.
  • Safety Stock Calculator

    Address:
    /tools/safety-stock-calculator
    Category:
    Inventory
    Description:
    Calculate Safety Stock with your chosen method: fixed days of cover, z × σd × √L, or combined demand and lead-time variability.
    Keywords:
    safety stock calculator
    Inputs:
    Method (choice), Average daily demand (number), Days of cover (fixed method) (number), Service factor z (your choice — none assumed) (number), Std. deviation of daily demand (number), Average lead time (number), Std. deviation of lead time (combined method) (number)
    Result:
    A main result with a supporting breakdown where relevant.
  • Gross Margin Calculator

    Address:
    /tools/gross-margin-calculator
    Category:
    Accounting & Costing
    Description:
    Calculate Gross Margin step by step: Gross margin % = (net revenue − COGS) ÷ net revenue × 100.
    Keywords:
    gross margin calculator
    Inputs:
    Currency (symbol only, never converted) (choice), Net revenue (number), Cost of goods sold (number)
    Result:
    A main result with a supporting breakdown where relevant.
  • ROE Calculator

    Address:
    /tools/roe-calculator
    Category:
    Corporate Finance
    Description:
    Calculate ROE step by step: Return on equity = net income ÷ average shareholders' equity × 100.
    Keywords:
    roe calculator
    Inputs:
    Currency (symbol only, never converted) (choice), Net income for the period (number), Shareholders' equity at start of period (number), Shareholders' equity at end of period (number)
    Result:
    A main result with a supporting breakdown where relevant.
  • Budget Variance Calculator

    Address:
    /tools/budget-variance-calculator
    Category:
    FP&A
    Description:
    Calculate Budget Variance step by step: Variance = actual − budget.
    Keywords:
    budget variance calculator
    Inputs:
    Currency (symbol only, never converted) (choice), Line type (choice), Budgeted amount (number), Actual amount (number)
    Result:
    A main result with a supporting breakdown where relevant.
  • Target Margin Pricing Calculator

    Address:
    /tools/target-margin-pricing-calculator
    Category:
    Business Pricing
    Description:
    Calculate Target Margin Pricing step by step: Price = cost ÷ (1 − target margin ÷ 100).
    Keywords:
    target margin pricing calculator
    Inputs:
    Currency (symbol only, never converted) (choice), Cost per unit (number), Target margin on price (number)
    Result:
    A main result with a supporting breakdown where relevant.
  • Contribution Margin Ratio Calculator

    Address:
    /tools/contribution-margin-ratio-calculator
    Category:
    Accounting & Costing
    Description:
    Calculate Contribution Margin Ratio step by step: Contribution margin ratio = (sales − variable costs) ÷ sales × 100.
    Keywords:
    contribution margin ratio calculator
    Inputs:
    Currency (symbol only, never converted) (choice), Sales revenue (number), Total variable costs (number)
    Result:
    A main result with a supporting breakdown where relevant.
  • Headcount Cost Calculator

    Address:
    /tools/headcount-cost-calculator
    Category:
    FP&A
    Description:
    Calculate Headcount Cost step by step: Annual cost = employees × [salary × (1 + benefits % + employer taxes %) + other cost per head].
    Keywords:
    headcount cost calculator
    Inputs:
    Currency (symbol only, never converted) (choice), Number of employees (number), Average annual base salary (number), Benefits as % of salary (your figure) (number), Employer payroll taxes as % of salary (your figure) (number), Other annual cost per head (equipment, software; 0 if none) (number)
    Result:
    A main result with a supporting breakdown where relevant.
  • Inventory Turnover Calculator

    Address:
    /tools/inventory-turnover-calculator
    Category:
    Inventory
    Description:
    Calculate Inventory Turnover step by step: cost of goods sold ÷ average inventory.
    Keywords:
    inventory turnover calculator
    Inputs:
    Currency (symbol only, never converted) (choice), Cost of goods sold for the period (number), Beginning inventory value (number), Ending inventory value (number)
    Result:
    A main result with a supporting breakdown where relevant.
  • Unit Economics Calculator

    Address:
    /tools/unit-economics-calculator
    Category:
    Business Pricing
    Description:
    Calculate Unit Economics step by step: LTV = (revenue per customer per month × gross margin) ÷ monthly churn; LTV:CAC = LTV ÷ CAC; CAC payback = CAC ÷ monthly gross profit per customer.
    Keywords:
    unit economics calculator
    Inputs:
    Currency (symbol only, never converted) (choice), Revenue per customer per month (number), Gross margin (your figure) (number), Monthly churn (your measured rate) (number), Customer acquisition cost (number)
    Result:
    A main result with a supporting breakdown where relevant.
  • NPV Calculator

    Address:
    /tools/npv-calculator
    Category:
    Corporate Finance
    Description:
    Calculate NPV step by step: NPV = −initial investment + Σ CFₜ ÷ (1 + r)ᵗ for t = 1…n.
    Keywords:
    npv calculator
    Inputs:
    Currency (symbol only, never converted) (choice), Discount rate (your choice) (number), Initial investment (year 0) (number), Cash flow, year 1 (number), Cash flow, year 2 (blank = none) (number), Cash flow, year 3 (blank = none) (number), Cash flow, year 4 (blank = none) (number), Cash flow, year 5 (blank = none) (number), Cash flow, year 6 (blank = none) (number)
    Result:
    A main result with a supporting breakdown where relevant.
  • Cash Flow Calculator

    Address:
    /tools/cash-flow-calculator
    Category:
    FP&A
    Description:
    Calculate Cash Flow step by step: Closing cash = opening cash + inflows − outflows.
    Keywords:
    cash flow calculator
    Inputs:
    Currency (symbol only, never converted) (choice), Opening cash balance (number), Cash inflows in the period (number), Cash outflows in the period (number)
    Result:
    A main result with a supporting breakdown where relevant.
  • Inventory Days Calculator (DIO)

    Address:
    /tools/inventory-days-calculator
    Category:
    Inventory
    Description:
    Calculate Inventory Days step by step: average inventory ÷ cost of goods sold × days in period.
    Keywords:
    inventory days calculator (dio)
    Inputs:
    Currency (symbol only, never converted) (choice), Average inventory value (number), Cost of goods sold for the period (number), Days in the period (number)
    Result:
    A main result with a supporting breakdown where relevant.
  • Break-Even Revenue Calculator

    Address:
    /tools/break-even-revenue-calculator
    Category:
    Accounting & Costing
    Description:
    Calculate Break-Even Revenue step by step: Break-even revenue = fixed costs ÷ contribution margin ratio.
    Keywords:
    break-even revenue calculator
    Inputs:
    Currency (symbol only, never converted) (choice), Fixed costs for the period (number), Contribution margin ratio (number)
    Result:
    A main result with a supporting breakdown where relevant.
  • IRR Calculator

    Address:
    /tools/irr-calculator
    Category:
    Corporate Finance
    Description:
    Calculate IRR step by step: IRR is the rate r at which −initial + Σ CFₜ ÷ (1 + r)ᵗ = 0.
    Keywords:
    irr calculator
    Inputs:
    Currency (symbol only, never converted) (choice), Initial investment (year 0) (number), Cash flow, year 1 (number), Cash flow, year 2 (blank = none) (number), Cash flow, year 3 (blank = none) (number), Cash flow, year 4 (blank = none) (number), Cash flow, year 5 (blank = none) (number), Cash flow, year 6 (blank = none) (number)
    Result:
    A main result with a supporting breakdown where relevant.
  • Burn Rate Calculator

    Address:
    /tools/burn-rate-calculator
    Category:
    FP&A
    Description:
    Calculate Burn Rate step by step: Net burn = (cash at start − cash at end) ÷ months.
    Keywords:
    burn rate calculator
    Inputs:
    Currency (symbol only, never converted) (choice), Cash at start (number), Cash at end (number), Months between (number)
    Result:
    A main result with a supporting breakdown where relevant.
  • Target Profit Calculator

    Address:
    /tools/target-profit-calculator
    Category:
    Accounting & Costing
    Description:
    Calculate Target Profit step by step: Target units = (fixed costs + target profit) ÷ (price − variable cost per unit), rounded up to a whole unit.
    Keywords:
    target profit calculator
    Inputs:
    Currency (symbol only, never converted) (choice), Fixed costs (number), Target operating profit (before tax) (number), Selling price per unit (number), Variable cost per unit (number)
    Result:
    A main result with a supporting breakdown where relevant.
  • Carrying Cost Calculator

    Address:
    /tools/carrying-cost-calculator
    Category:
    Inventory
    Description:
    Calculate Carrying Cost step by step: capital cost + storage + insurance and taxes + obsolescence and shrinkage.
    Keywords:
    carrying cost calculator
    Inputs:
    Currency (symbol only, never converted) (choice), Average inventory value (number), Cost of capital (number), Storage and handling cost per year (number), Insurance and taxes per year (number), Obsolescence, damage and shrinkage per year (number)
    Result:
    A main result with a supporting breakdown where relevant.
  • Payback Period Calculator

    Address:
    /tools/payback-period-calculator
    Category:
    Corporate Finance
    Description:
    Calculate Payback Period step by step: Payback = years before full recovery + unrecovered amount ÷ cash flow in the recovery year.
    Keywords:
    payback period calculator
    Inputs:
    Currency (symbol only, never converted) (choice), Initial investment (number), Cash flow, year 1 (number), Cash flow, year 2 (blank = none) (number), Cash flow, year 3 (blank = none) (number), Cash flow, year 4 (blank = none) (number), Cash flow, year 5 (blank = none) (number), Cash flow, year 6 (blank = none) (number)
    Result:
    A main result with a supporting breakdown where relevant.
  • Margin of Safety Calculator

    Address:
    /tools/margin-of-safety-calculator
    Category:
    Accounting & Costing
    Description:
    Calculate Margin of Safety step by step: Margin of safety % = (actual sales − break-even sales) ÷ actual sales × 100.
    Keywords:
    margin of safety calculator
    Inputs:
    Currency (symbol only, never converted) (choice), Actual or budgeted sales (number), Break-even sales (number)
    Result:
    A main result with a supporting breakdown where relevant.
  • Stock Coverage Calculator

    Address:
    /tools/stock-coverage-calculator
    Category:
    Inventory
    Description:
    Calculate Stock Coverage step by step: (on hand + on order) ÷ expected daily demand.
    Keywords:
    stock coverage calculator
    Inputs:
    Stock on hand (number), Stock on order (enter 0 if none) (number), Expected daily demand (number)
    Result:
    A main result with a supporting breakdown where relevant.
  • Discounted Payback Calculator

    Address:
    /tools/discounted-payback-calculator
    Category:
    Corporate Finance
    Description:
    Calculate Discounted Payback step by step: Discount each CFₜ by (1 + r)ᵗ, then find when the cumulative discounted flow covers the investment.
    Keywords:
    discounted payback calculator
    Inputs:
    Currency (symbol only, never converted) (choice), Discount rate (your choice) (number), Initial investment (number), Cash flow, year 1 (number), Cash flow, year 2 (blank = none) (number), Cash flow, year 3 (blank = none) (number), Cash flow, year 4 (blank = none) (number), Cash flow, year 5 (blank = none) (number), Cash flow, year 6 (blank = none) (number)
    Result:
    A main result with a supporting breakdown where relevant.
  • Runway Calculator

    Address:
    /tools/runway-calculator
    Category:
    FP&A
    Description:
    Calculate Runway step by step: Runway = cash available ÷ net monthly burn.
    Keywords:
    runway calculator
    Inputs:
    Currency (symbol only, never converted) (choice), Cash available now (number), Net burn per month (number)
    Result:
    A main result with a supporting breakdown where relevant.
  • Working Capital Calculator

    Address:
    /tools/working-capital-calculator
    Category:
    Corporate Finance
    Description:
    Calculate Working Capital step by step: Working capital = current assets − current liabilities.
    Keywords:
    working capital calculator
    Inputs:
    Currency (symbol only, never converted) (choice), Current assets (number), Current liabilities (number)
    Result:
    A main result with a supporting breakdown where relevant.
  • Scenario Analysis Calculator

    Address:
    /tools/scenario-analysis-calculator
    Category:
    FP&A
    Description:
    Calculate Scenario Analysis step by step: Scenario profit = revenue × (1 + revenue change) − costs × (1 + cost change); optional weighted profit = Σ weight × scenario profit.
    Keywords:
    scenario analysis calculator
    Inputs:
    Currency (symbol only, never converted) (choice), Base-case revenue (number), Base-case costs (number), Downside revenue change (number), Downside cost change (number), Upside revenue change (number), Upside cost change (number), Downside weight (optional) (number), Base weight (optional) (number), Upside weight (optional) (number)
    Result:
    A main result with a supporting breakdown where relevant.
  • Operating Leverage Calculator

    Address:
    /tools/operating-leverage-calculator
    Category:
    Accounting & Costing
    Description:
    Calculate Operating Leverage step by step: Degree of operating leverage = contribution margin ÷ operating income.
    Keywords:
    operating leverage calculator
    Inputs:
    Currency (symbol only, never converted) (choice), Total contribution margin (number), Operating income (number), Sales change to test (optional) (number)
    Result:
    A main result with a supporting breakdown where relevant.
  • Service Level Calculator

    Address:
    /tools/service-level-calculator
    Category:
    Inventory
    Description:
    Calculate cycle service level from measured stock-out-free cycles, or from a z value you choose.
    Keywords:
    service level calculator
    Inputs:
    Method (choice), Replenishment cycles with no stock-out (number), Total replenishment cycles (number), Service factor z (number)
    Result:
    A main result with a supporting breakdown where relevant.
  • Fill Rate Calculator

    Address:
    /tools/fill-rate-calculator
    Category:
    Inventory
    Description:
    Calculate Fill Rate step by step: units shipped from stock on first attempt ÷ units ordered.
    Keywords:
    fill rate calculator
    Inputs:
    Units shipped from stock on first attempt (number), Units ordered (number)
    Result:
    A main result with a supporting breakdown where relevant.
  • Cost Allocation Calculator

    Address:
    /tools/cost-allocation-calculator
    Category:
    Accounting & Costing
    Description:
    Calculate Cost Allocation step by step: Allocation rate = cost pool ÷ total driver quantity; each department's share = its driver quantity × rate.
    Keywords:
    cost allocation calculator
    Inputs:
    Currency (symbol only, never converted) (choice), Cost pool to allocate (number), Department A — driver quantity (number), Department B — driver quantity (number), Department C — driver quantity (optional) (number), Department D — driver quantity (optional) (number)
    Result:
    A main result with a supporting breakdown where relevant.
  • Cash Conversion Cycle Calculator

    Address:
    /tools/cash-conversion-cycle-calculator
    Category:
    Corporate Finance
    Description:
    Calculate Cash Conversion Cycle step by step: CCC = DIO + DSO − DPO.
    Keywords:
    cash conversion cycle calculator
    Inputs:
    Days inventory outstanding (number), Days sales outstanding (number), Days payables outstanding (number)
    Result:
    A main result with a supporting breakdown where relevant.
  • Markup Calculator

    Address:
    /tools/markup-calculator
    Category:
    Accounting & Costing
    Description:
    Calculate Markup step by step: Markup % = (price − cost) ÷ cost × 100, so price = cost × (1 + markup ÷ 100).
    Keywords:
    markup calculator
    Inputs:
    Currency (symbol only, never converted) (choice), What to find (choice), Cost per unit (number), Markup on cost (price mode) (number), Selling price (markup mode) (number)
    Result:
    A main result with a supporting breakdown where relevant.
  • Economic Batch Quantity Calculator

    Address:
    /tools/economic-batch-quantity-calculator
    Category:
    Inventory
    Description:
    Calculate Economic Batch Quantity step by step: √(2DS ÷ (H × (1 − D ÷ P))).
    Keywords:
    economic batch quantity calculator
    Inputs:
    Currency (symbol only, never converted) (choice), Annual demand (number), Setup cost per batch (number), Holding cost per unit per year (number), Annual production rate (number)
    Result:
    A main result with a supporting breakdown where relevant.
  • DSO Calculator

    Address:
    /tools/dso-calculator
    Category:
    Corporate Finance
    Description:
    Calculate DSO step by step: Days sales outstanding = average accounts receivable ÷ credit sales for the period × days in period.
    Keywords:
    dso calculator
    Inputs:
    Currency (symbol only, never converted) (choice), Average accounts receivable (number), Credit sales for the period (number), Days in the period (number)
    Result:
    A main result with a supporting breakdown where relevant.
  • DPO Calculator

    Address:
    /tools/dpo-calculator
    Category:
    Corporate Finance
    Description:
    Calculate DPO step by step: Days payables outstanding = average accounts payable ÷ cost of goods sold (or purchases) × days in period.
    Keywords:
    dpo calculator
    Inputs:
    Currency (symbol only, never converted) (choice), Average accounts payable (number), Cost of goods sold (or purchases) (number), Days in the period (number)
    Result:
    A main result with a supporting breakdown where relevant.
  • MOQ Analysis Calculator

    Address:
    /tools/moq-analysis-calculator
    Category:
    Inventory
    Description:
    Calculate the extra annual cost of a supplier minimum order quantity compared with your EOQ.
    Keywords:
    moq analysis calculator
    Inputs:
    Currency (symbol only, never converted) (choice), Annual demand (number), Cost per order (number), Holding cost per unit per year (number), Supplier minimum order quantity (number)
    Result:
    A main result with a supporting breakdown where relevant.
  • Margin Calculator

    Address:
    /tools/profit-margin-calculator
    Category:
    Accounting & Costing
    Description:
    Calculate Margin step by step: Margin % = (price − cost) ÷ price × 100.
    Keywords:
    margin calculator
    Inputs:
    Currency (symbol only, never converted) (choice), Selling price or revenue (number), Cost (number)
    Result:
    A main result with a supporting breakdown where relevant.
  • Purchase Cost Calculator

    Address:
    /tools/purchase-cost-calculator
    Category:
    Procurement
    Description:
    Calculate Purchase Cost step by step: price × quantity × (1 − discount) × (1 + tax) + shipping.
    Keywords:
    purchase cost calculator
    Inputs:
    Currency (symbol only, never converted) (choice), Unit price (number), Quantity (number), Discount (enter 0 if none) (number), Sales tax / VAT on goods (enter 0 if none) (number), Shipping and handling (number)
    Result:
    A main result with a supporting breakdown where relevant.
  • Current Ratio Calculator

    Address:
    /tools/current-ratio-calculator
    Category:
    Corporate Finance
    Description:
    Calculate Current Ratio step by step: Current ratio = current assets ÷ current liabilities.
    Keywords:
    current ratio calculator
    Inputs:
    Currency (symbol only, never converted) (choice), Current assets (number), Current liabilities (number)
    Result:
    A main result with a supporting breakdown where relevant.
  • Quick Ratio Calculator

    Address:
    /tools/quick-ratio-calculator
    Category:
    Corporate Finance
    Description:
    Calculate Quick Ratio step by step: Quick ratio = (cash + marketable securities + receivables) ÷ current liabilities.
    Keywords:
    quick ratio calculator
    Inputs:
    Currency (symbol only, never converted) (choice), Cash and cash equivalents (number), Short-term marketable securities (number), Accounts receivable (net) (number), Current liabilities (number)
    Result:
    A main result with a supporting breakdown where relevant.
  • Landed Cost Calculator

    Address:
    /tools/landed-cost-calculator
    Category:
    Procurement
    Description:
    Calculate Landed Cost step by step: goods + freight + insurance + duty + brokerage + other.
    Keywords:
    landed cost calculator
    Inputs:
    Currency (symbol only, never converted) (choice), Goods value (supplier invoice) (number), Freight (number), Insurance (number), Duty basis (check your customs rules) (choice), Duty rate (enter 0 if none) (number), Customs brokerage and handling (number), Other costs (enter 0 if none) (number), Units in the shipment (number)
    Result:
    A main result with a supporting breakdown where relevant.
  • Supplier Comparison Calculator

    Address:
    /tools/supplier-comparison-calculator
    Category:
    Procurement
    Description:
    Compare up to three suppliers on total landed cost: (price + freight + other per unit) × quantity.
    Keywords:
    supplier comparison calculator
    Inputs:
    Currency (symbol only, never converted) (choice), Quantity (number), Supplier A — unit price (number), Supplier A — freight per unit (number), Supplier A — other cost per unit (number), Supplier B — unit price (number), Supplier B — freight per unit (number), Supplier B — other cost per unit (number), Supplier C — unit price (optional) (number), Supplier C — freight per unit (number), Supplier C — other cost per unit (number)
    Result:
    A main result with a supporting breakdown where relevant.
  • Debt Ratio Calculator

    Address:
    /tools/debt-ratio-calculator
    Category:
    Corporate Finance
    Description:
    Calculate Debt Ratio step by step: Debt ratio = total liabilities ÷ total assets × 100.
    Keywords:
    debt ratio calculator
    Inputs:
    Currency (symbol only, never converted) (choice), Total liabilities (number), Total assets (number)
    Result:
    A main result with a supporting breakdown where relevant.
  • Purchase Price Variance Calculator

    Address:
    /tools/purchase-price-variance-calculator
    Category:
    Procurement
    Description:
    Calculate Purchase Price Variance step by step: (actual price − standard price) × quantity purchased.
    Keywords:
    purchase price variance calculator
    Inputs:
    Currency (symbol only, never converted) (choice), Standard (budgeted) unit price (number), Actual unit price (number), Quantity purchased (number)
    Result:
    A main result with a supporting breakdown where relevant.
  • Supplier Cost Calculator

    Address:
    /tools/supplier-cost-calculator
    Category:
    Procurement
    Description:
    Calculate total annual supplier cost and a supplier cost index including freight, quality, ordering and late-delivery costs.
    Keywords:
    supplier cost calculator
    Inputs:
    Currency (symbol only, never converted) (choice), Annual purchase value (number), Annual freight paid (number), Annual quality and rework cost (number), Orders placed per year (number), Internal cost per order (number), Annual cost of late deliveries (number)
    Result:
    A main result with a supporting breakdown where relevant.
  • Supplier Savings Calculator

    Address:
    /tools/supplier-savings-calculator
    Category:
    Procurement
    Description:
    Calculate Supplier Savings step by step: (current price − new price) × annual quantity, net of switching cost.
    Keywords:
    supplier savings calculator
    Inputs:
    Currency (symbol only, never converted) (choice), Current unit price (number), New unit price (number), Annual quantity (number), One-time switching cost (enter 0 if none) (number)
    Result:
    A main result with a supporting breakdown where relevant.
  • Contract Savings Calculator

    Address:
    /tools/contract-savings-calculator
    Category:
    Procurement
    Description:
    Calculate Contract Savings step by step: (baseline − contract spend) × years − implementation cost.
    Keywords:
    contract savings calculator
    Inputs:
    Currency (symbol only, never converted) (choice), Baseline annual spend (number), Annual spend under the contract (number), Contract term (number), One-time implementation cost (enter 0 if none) (number)
    Result:
    A main result with a supporting breakdown where relevant.
  • Total Cost of Ownership Calculator

    Address:
    /tools/total-cost-of-ownership-calculator
    Category:
    Procurement
    Description:
    Calculate TCO step by step: price + setup + running costs over the period + disposal − residual value.
    Keywords:
    total cost of ownership calculator
    Inputs:
    Currency (symbol only, never converted) (choice), Purchase price (number), Installation, setup and training (number), Annual operating cost (number), Annual maintenance cost (number), Ownership period (number), End-of-life disposal cost (enter 0 if none) (number), Resale or residual value (enter 0 if none) (number)
    Result:
    A main result with a supporting breakdown where relevant.
  • Freight Cost Calculator

    Address:
    /tools/freight-cost-calculator
    Category:
    Logistics
    Description:
    Calculate Freight Cost step by step: linehaul (with minimum charge) + fuel surcharge + accessorials.
    Keywords:
    freight cost calculator
    Inputs:
    Currency (symbol only, never converted) (choice), Rate basis (choice), Carrier rate (per weight or distance unit) (number), Shipment weight or distance (number), Minimum charge (enter 0 if none) (number), Fuel surcharge (enter 0 if none) (number), Accessorial charges (enter 0 if none) (number)
    Result:
    A main result with a supporting breakdown where relevant.
  • Cost Per Mile Calculator

    Address:
    /tools/cost-per-mile-calculator
    Category:
    Logistics
    Description:
    Calculate Cost Per Mile or km step by step: (fixed + variable costs) ÷ distance driven.
    Keywords:
    cost per mile calculator
    Inputs:
    Currency (symbol only, never converted) (choice), Distance unit (choice), Fixed costs for the period (number), Variable costs for the period (number), Distance driven in the period (number)
    Result:
    A main result with a supporting breakdown where relevant.
  • Cost Per Load Calculator

    Address:
    /tools/cost-per-load-calculator
    Category:
    Logistics
    Description:
    Calculate Cost Per Load step by step: total costs ÷ loads, with optional margin per load.
    Keywords:
    cost per load calculator
    Inputs:
    Currency (symbol only, never converted) (choice), Total costs for the period (number), Loads hauled in the period (number), Average revenue per load (optional) (number)
    Result:
    A main result with a supporting breakdown where relevant.
  • Fleet Fuel Cost Calculator

    Address:
    /tools/fleet-fuel-cost-calculator
    Category:
    Logistics
    Description:
    Calculate Fleet Fuel Cost step by step: distance ÷ fuel economy × fuel price.
    Keywords:
    fleet fuel cost calculator
    Inputs:
    Currency (symbol only, never converted) (choice), Distance unit (choice), Distance (number), Fuel economy (distance per litre or gallon) (number), Fuel price per litre or gallon (number)
    Result:
    A main result with a supporting breakdown where relevant.
  • Fuel Surcharge Calculator

    Address:
    /tools/fuel-surcharge-calculator
    Category:
    Logistics
    Description:
    Calculate Fuel Surcharge step by step: (current − base fuel price) ÷ fuel economy × distance.
    Keywords:
    fuel surcharge calculator
    Inputs:
    Currency (symbol only, never converted) (choice), Distance unit (choice), Base (peg) fuel price in your agreement (number), Current fuel price (index) (number), Fuel economy in the agreement (distance per unit) (number), Trip distance (number), Linehaul rate per distance (optional, for %) (number)
    Result:
    A main result with a supporting breakdown where relevant.
  • Driver Cost Calculator

    Address:
    /tools/driver-cost-calculator
    Category:
    Logistics
    Description:
    Calculate Driver Cost step by step: pay rate × miles or hours × (1 + burden) + other.
    Keywords:
    driver cost calculator
    Inputs:
    Currency (symbol only, never converted) (choice), Pay basis (choice), Pay rate (number), Distance or hours worked (number), Payroll taxes and benefits (number), Per diem and other (enter 0 if none) (number)
    Result:
    A main result with a supporting breakdown where relevant.
  • Vehicle Cost Calculator

    Address:
    /tools/vehicle-cost-calculator
    Category:
    Logistics
    Description:
    Calculate annual Vehicle Cost step by step: depreciation + insurance + maintenance + licensing + interest.
    Keywords:
    vehicle cost calculator
    Inputs:
    Currency (symbol only, never converted) (choice), Distance unit (choice), Purchase price (number), Residual value at end of life (number), Useful life (number), Annual insurance (number), Annual maintenance and tyres (number), Annual licensing and permits (number), Annual financing interest (enter 0 if none) (number), Annual distance (number)
    Result:
    A main result with a supporting breakdown where relevant.
  • Trip Cost Calculator

    Address:
    /tools/trip-cost-calculator
    Category:
    Logistics
    Description:
    Calculate Trip Cost step by step: fuel + driver + vehicle + tolls + other.
    Keywords:
    trip cost calculator
    Inputs:
    Currency (symbol only, never converted) (choice), Distance unit (choice), Trip distance (number), Fuel economy (distance per unit) (number), Fuel price per unit (number), Driver hours (number), Driver cost per hour (loaded) (number), Tolls (enter 0 if none) (number), Vehicle cost per distance (from vehicle cost) (number), Other trip costs (enter 0 if none) (number)
    Result:
    A main result with a supporting breakdown where relevant.
  • Payload Utilization Calculator

    Address:
    /tools/payload-utilization-calculator
    Category:
    Logistics
    Description:
    Calculate Payload Utilization step by step: actual load weight ÷ maximum permitted payload.
    Keywords:
    payload utilization calculator
    Inputs:
    Actual load weight (number), Maximum permitted payload (same unit) (number)
    Result:
    A main result with a supporting breakdown where relevant.
  • Cube Utilization Calculator

    Address:
    /tools/cube-utilization-calculator
    Category:
    Logistics
    Description:
    Calculate Cube Utilization step by step: loaded volume ÷ usable volume.
    Keywords:
    cube utilization calculator
    Inputs:
    Loaded volume (number), Usable volume (same unit) (number)
    Result:
    A main result with a supporting breakdown where relevant.
  • Delivery Cost Calculator

    Address:
    /tools/delivery-cost-calculator
    Category:
    Logistics
    Description:
    Calculate Delivery Cost step by step: (driver + vehicle + fuel + other) ÷ deliveries.
    Keywords:
    delivery cost calculator
    Inputs:
    Currency (symbol only, never converted) (choice), Driver cost for the route (number), Vehicle cost for the route (number), Fuel cost for the route (number), Other route costs (enter 0 if none) (number), Deliveries on the route (number)
    Result:
    A main result with a supporting breakdown where relevant.
  • Last Mile Cost Calculator

    Address:
    /tools/last-mile-cost-calculator
    Category:
    Logistics
    Description:
    Calculate cost per delivered package including failed first attempts.
    Keywords:
    last mile cost calculator
    Inputs:
    Currency (symbol only, never converted) (choice), Distance unit (choice), Route hours (number), Driver cost per hour (loaded) (number), Vehicle cost per hour (number), Route distance (number), Fuel or energy cost per distance (number), Packages attempted (number), Failed first-attempt rate (enter 0 if none) (number)
    Result:
    A main result with a supporting breakdown where relevant.
  • Warehouse Cost Calculator

    Address:
    /tools/warehouse-cost-calculator
    Category:
    Logistics
    Description:
    Calculate Warehouse Cost step by step: occupancy + labour + equipment + utilities + other, per unit handled.
    Keywords:
    warehouse cost calculator
    Inputs:
    Currency (symbol only, never converted) (choice), Rent / occupancy per month (number), Labour per month (number), Equipment per month (number), Utilities per month (number), Other per month (enter 0 if none) (number), Units handled per month (orders, pallets or lines) (number)
    Result:
    A main result with a supporting breakdown where relevant.
  • 3PL Cost Model Calculator

    Address:
    /tools/3pl-cost-calculator
    Category:
    Logistics
    Description:
    Model 3PL cost step by step: receiving + storage + pick and pack + shipping + account fee.
    Keywords:
    3pl cost model calculator
    Inputs:
    Currency (symbol only, never converted) (choice), Units received (number), Receiving rate per unit (number), Pallets stored (number), Storage rate per pallet per month (number), Orders picked and packed (number), Pick and pack rate per order (number), Shipping charges (pass-through) (number), Account management fee (enter 0 if none) (number)
    Result:
    A main result with a supporting breakdown where relevant.
  • Demand Forecast Calculator

    Address:
    /tools/demand-forecast-calculator
    Category:
    Supply Chain
    Description:
    Forecast next-period demand with the method you choose: simple moving average, weighted moving average or exponential smoothing.
    Keywords:
    demand forecast calculator
    Inputs:
    Forecast method (choice), Period 1 actual demand (number), Period 2 actual demand (number), Period 3 actual demand (optional) (number), Period 4 actual demand (optional) (number), Period 5 actual demand (optional) (number), Period 6 actual demand (optional) (number), WMA weight — oldest of last 3 (number), WMA weight — middle (number), WMA weight — newest (number), SES smoothing constant α (0–1) (number), SES initial forecast (number)
    Result:
    A main result with a supporting breakdown where relevant.
  • Inventory Forecast Calculator

    Address:
    /tools/inventory-forecast-calculator
    Category:
    Supply Chain
    Description:
    Calculate projected ending stock: opening stock + scheduled receipts − forecast demand.
    Keywords:
    inventory forecast calculator
    Inputs:
    Opening stock (number), Scheduled receipts in the period (number), Forecast demand in the period (number), Safety stock target (enter 0 if none) (number)
    Result:
    A main result with a supporting breakdown where relevant.
  • Reorder Forecast Calculator

    Address:
    /tools/reorder-forecast-calculator
    Category:
    Supply Chain
    Description:
    Calculate days until reorder: (on hand + on order − reorder point) ÷ forecast daily demand.
    Keywords:
    reorder forecast calculator
    Inputs:
    Stock on hand (number), Stock on order (enter 0 if none) (number), Reorder point (number), Forecast daily demand (number)
    Result:
    A main result with a supporting breakdown where relevant.
  • Lead Time Demand Calculator

    Address:
    /tools/lead-time-demand-calculator
    Category:
    Supply Chain
    Description:
    Calculate Lead Time Demand step by step: average daily demand × average lead time.
    Keywords:
    lead time demand calculator
    Inputs:
    Average daily demand (number), Average lead time (number), Std. deviation of daily demand (optional) (number), Std. deviation of lead time (optional) (number)
    Result:
    A main result with a supporting breakdown where relevant.
  • Capacity Planning Calculator

    Address:
    /tools/capacity-planning-calculator
    Category:
    Supply Chain
    Description:
    Compare required hours (demand × time per unit) with available hours at your planned utilisation.
    Keywords:
    capacity planning calculator
    Inputs:
    Forecast demand (number), Time per unit (number), Resources (machines or people) (number), Available hours per resource in the period (number), Planned utilisation (your target) (number)
    Result:
    A main result with a supporting breakdown where relevant.
  • Warehouse Capacity Calculator

    Address:
    /tools/warehouse-capacity-calculator
    Category:
    Supply Chain
    Description:
    Calculate pallet positions step by step: bays × levels × positions per level + floor positions.
    Keywords:
    warehouse capacity calculator
    Inputs:
    Rack bays (number), Levels per bay (number), Pallet positions per level (number), Floor (block-stack) positions (enter 0 if none) (number)
    Result:
    A main result with a supporting breakdown where relevant.
  • Storage Utilization Calculator

    Address:
    /tools/storage-utilization-calculator
    Category:
    Supply Chain
    Description:
    Calculate Storage Utilization step by step: occupied ÷ total positions.
    Keywords:
    storage utilization calculator
    Inputs:
    Occupied positions (or volume) (number), Total positions (or volume) (number)
    Result:
    A main result with a supporting breakdown where relevant.
  • US Income Tax Calculator

    Address:
    /tools/us-income-tax-calculator
    Category:
    Tax
    Description:
    Calculate US Income Tax step by step: Tax = progressive brackets applied to (gross income − standard deduction).
    Keywords:
    us income tax calculator
    Inputs:
    Gross annual income (number), Filing status (choice)
    Result:
    A main result with a supporting breakdown where relevant.
  • eBay Fee Calculator

    Address:
    /tools/ebay-fee-calculator
    Category:
    Finance
    Description:
    Calculate eBay Fee step by step: Fees = (sale price + shipping) × final value fee % + per-order fee; you receive the buyer total − fees − your other costs.
    Keywords:
    ebay fee calculator
    Inputs:
    Currency (symbol only, never converted) (choice), Item sale price (number), Shipping charged to buyer (number), Final value fee (number), Per-order fixed fee (number), Other costs (postage, packaging, item cost) (number)
    Result:
    A main result with a supporting breakdown where relevant.
  • Graphing Calculator

    Address:
    /tools/graphing-calculator
    Category:
    Math
    Description:
    Calculate Graphing step by step: Each expression is evaluated at 200 evenly spaced x values across the interval and the points are joined.
    Keywords:
    graphing calculator
    Inputs:
    Expression 1: y = (text), Expression 2 (optional): y = (text), Expression 3 (optional): y = (text), x from (number), x to (number)
    Result:
    A main result with a supporting breakdown where relevant.
  • Subnet Calculator

    Address:
    /tools/subnet-calculator
    Category:
    Developer Tools
    Description:
    Calculate Subnet step by step: Network = address AND mask; broadcast = network OR wildcard; usable hosts = 2^(32 − prefix) − 2.
    Keywords:
    subnet calculator
    Inputs:
    IPv4 address (text), Prefix length (CIDR) (number)
    Result:
    A main result with a supporting breakdown where relevant.
  • SIP Calculator

    Address:
    /tools/sip-calculator
    Category:
    Personal Finance
    Description:
    Calculate SIP step by step: Future value of regular contributions: FV = P × [((1 + i)ⁿ − 1) ÷ i] × (1 + i), where i is the return per period and n the number of periods.
    Keywords:
    sip calculator
    Inputs:
    Currency (symbol only, never converted) (choice), Contribution each period (number), Contribution frequency (choice), Expected annual return (number), Investment period (number)
    Result:
    A main result with a supporting breakdown where relevant.
  • US Take-Home Pay Calculator

    Address:
    /tools/us-take-home-pay-calculator
    Category:
    Tax
    Description:
    Calculate US Take-Home Pay step by step: Take-home = gross − federal income tax − Social Security (6.2% up to the wage base) − Medicare (1.45%).
    Keywords:
    us take-home pay calculator
    Inputs:
    Gross annual salary (number), Filing status (choice)
    Result:
    A main result with a supporting breakdown where relevant.
  • IBAN Validator

    Address:
    /tools/iban-validator
    Category:
    Developer Tools
    Description:
    Calculate IBAN Validator step by step: Move the first four characters to the end, convert letters to numbers (A=10 … Z=35), then the number mod 97 must equal 1.
    Keywords:
    iban validator
    Inputs:
    IBAN (text)
    Result:
    A main result with a supporting breakdown where relevant.
  • Inflation Calculator

    Address:
    /tools/inflation-calculator
    Category:
    Personal Finance
    Description:
    Calculate Inflation step by step: Future cost = amount × (1 + r)ᵗ; future value of today's money = amount ÷ (1 + r)ᵗ.
    Keywords:
    inflation calculator
    Inputs:
    Currency (symbol only, never converted) (choice), Amount today (number), Annual inflation rate (number), Number of years (number)
    Result:
    A main result with a supporting breakdown where relevant.
  • India Income Tax Calculator

    Address:
    /tools/india-income-tax-calculator
    Category:
    Tax
    Description:
    Calculate India Income Tax step by step: Tax = new-regime slabs on (gross − ₹75,000 standard deduction), minus the Section 87A rebate where it applies, plus 4% cess.
    Keywords:
    india income tax calculator
    Inputs:
    Gross annual income (number)
    Result:
    A main result with a supporting breakdown where relevant.
  • Net Worth Calculator

    Address:
    /tools/net-worth-calculator
    Category:
    Personal Finance
    Description:
    Calculate Net Worth step by step: Net worth = total assets − total liabilities.
    Keywords:
    net worth calculator
    Inputs:
    Currency (symbol only, never converted) (choice), Cash and bank balances (number), Investments and retirement accounts (number), Property and vehicles (current value) (number), Other assets (number), Loans and mortgages outstanding (number), Credit card and other short-term debt (number), Other liabilities (number)
    Result:
    A main result with a supporting breakdown where relevant.
  • India Take-Home Pay Calculator

    Address:
    /tools/india-take-home-pay-calculator
    Category:
    Tax
    Description:
    Calculate India Take-Home Pay step by step: Take-home = gross salary − income tax under the new regime (including cess).
    Keywords:
    india take-home pay calculator
    Inputs:
    Gross annual salary (CTC minus employer contributions) (number)
    Result:
    A main result with a supporting breakdown where relevant.
  • CPM Calculator

    Address:
    /tools/cpm-calculator
    Category:
    Marketing
    Description:
    CPM: CPM = cost ÷ impressions × 1,000. Methodology stated, your own inputs only.
    Keywords:
    cpm calculator
    Inputs:
    Currency (symbol only, never converted) (choice), Campaign cost (number), Impressions (number)
    Result:
    A main result with a supporting breakdown where relevant.
  • MRR Growth Calculator

    Address:
    /tools/mrr-growth-calculator
    Category:
    SaaS
    Description:
    MRR Growth: Growth = (ending MRR ÷ starting MRR) − 1. Methodology stated, your own inputs only.
    Keywords:
    mrr growth calculator
    Inputs:
    Currency (symbol only, never converted) (choice), MRR at start of period (number), MRR at end of period (number), Number of months between them (number)
    Result:
    A main result with a supporting breakdown where relevant.
  • Quota Calculator

    Address:
    /tools/quota-calculator
    Category:
    Sales
    Description:
    Quota: Quota per rep = target × (1 + over-assignment ÷ 100) ÷ reps. Methodology stated, your own inputs only.
    Keywords:
    quota calculator
    Inputs:
    Currency (symbol only, never converted) (choice), Company revenue target for the period (number), Number of quota-carrying reps (number), Over-assignment buffer (your choice, 0 if none) (number)
    Result:
    A main result with a supporting breakdown where relevant.
  • CAC Calculator

    Address:
    /tools/cac-calculator
    Category:
    Customer Economics
    Description:
    CAC: CAC = acquisition spend ÷ new customers acquired, for the same period. Methodology stated, your own inputs only.
    Keywords:
    cac calculator
    Inputs:
    Currency (symbol only, never converted) (choice), CAC definition (choice), Marketing spend in the period (number), Sales cost in the period (salaries, tools; 0 for paid-only) (number), New customers acquired in the period (number)
    Result:
    A main result with a supporting breakdown where relevant.
  • CPC Calculator

    Address:
    /tools/cpc-calculator
    Category:
    Marketing
    Description:
    CPC: CPC = cost ÷ clicks. Methodology stated, your own inputs only.
    Keywords:
    cpc calculator
    Inputs:
    Currency (symbol only, never converted) (choice), Campaign cost (number), Clicks (number)
    Result:
    A main result with a supporting breakdown where relevant.
  • LTV Calculator

    Address:
    /tools/ltv-calculator
    Category:
    Customer Economics
    Description:
    LTV: LTV = ARPU × gross margin ÷ churn rate (margin-adjusted). Methodology stated, your own inputs only.
    Keywords:
    ltv calculator
    Inputs:
    Currency (symbol only, never converted) (choice), Average revenue per customer per month (number), Gross margin (your figure) (number), Monthly customer churn (your measured rate) (number)
    Result:
    A main result with a supporting breakdown where relevant.
  • Sales Commission Calculator

    Address:
    /tools/sales-commission-calculator
    Category:
    Sales
    Description:
    Sales Commission: Flat: commission = sales × rate. Methodology stated, your own inputs only.
    Keywords:
    sales commission calculator
    Inputs:
    Currency (symbol only, never converted) (choice), Plan type (choice), Sales amount (number), Commission rate (tier 1) (number), Tier threshold (tiered plan only) (number), Rate above threshold (tiered plan only) (number)
    Result:
    A main result with a supporting breakdown where relevant.
  • ARR Growth Calculator

    Address:
    /tools/arr-growth-calculator
    Category:
    SaaS
    Description:
    ARR Growth: Growth = (ending ARR ÷ starting ARR) − 1. Methodology stated, your own inputs only.
    Keywords:
    arr growth calculator
    Inputs:
    Currency (symbol only, never converted) (choice), ARR at start of period (number), ARR at end of period (number), Number of years between them (number)
    Result:
    A main result with a supporting breakdown where relevant.
  • CPA Calculator

    Address:
    /tools/cpa-calculator
    Category:
    Marketing
    Description:
    CPA: CPA = cost ÷ actions. Methodology stated, your own inputs only.
    Keywords:
    cpa calculator
    Inputs:
    Currency (symbol only, never converted) (choice), Campaign cost (number), Conversions or actions (number)
    Result:
    A main result with a supporting breakdown where relevant.
  • LTV:CAC Ratio Calculator

    Address:
    /tools/ltv-cac-ratio-calculator
    Category:
    Customer Economics
    Description:
    LTV:CAC Ratio: LTV:CAC = LTV ÷ CAC. Methodology stated, your own inputs only.
    Keywords:
    ltv:cac ratio calculator
    Inputs:
    Currency (symbol only, never converted) (choice), Customer lifetime value (your figure) (number), Customer acquisition cost (your figure) (number)
    Result:
    A main result with a supporting breakdown where relevant.
  • Win Rate Calculator

    Address:
    /tools/win-rate-calculator
    Category:
    Sales
    Description:
    Win Rate: Win rate = won ÷ (won + lost) × 100. Methodology stated, your own inputs only.
    Keywords:
    win rate calculator
    Inputs:
    Opportunities won (number), Opportunities lost (number)
    Result:
    A main result with a supporting breakdown where relevant.
  • Expansion Revenue Calculator

    Address:
    /tools/expansion-revenue-calculator
    Category:
    SaaS
    Description:
    Expansion Revenue: Expansion MRR = upgrades + add-ons + price increases. Methodology stated, your own inputs only.
    Keywords:
    expansion revenue calculator
    Inputs:
    Currency (symbol only, never converted) (choice), Upgrades and added seats (new MRR from existing customers) (number), Add-on products (MRR) (number), Price increases (MRR) (number), Downgrades (MRR lost, 0 if none) (number)
    Result:
    A main result with a supporting breakdown where relevant.
  • CTR Calculator

    Address:
    /tools/ctr-calculator
    Category:
    Marketing
    Description:
    CTR: CTR = clicks ÷ impressions × 100. Methodology stated, your own inputs only.
    Keywords:
    ctr calculator
    Inputs:
    Clicks (number), Impressions (number)
    Result:
    A main result with a supporting breakdown where relevant.
  • Conversion Rate Calculator

    Address:
    /tools/conversion-rate-calculator
    Category:
    Sales
    Description:
    Conversion Rate: Conversion rate = conversions ÷ starting count × 100. Methodology stated, your own inputs only.
    Keywords:
    conversion rate calculator
    Inputs:
    What are you measuring? (choice), Starting count (leads, visits or clicks) (number), Number that converted (number)
    Result:
    A main result with a supporting breakdown where relevant.
  • CAC Payback Calculator

    Address:
    /tools/cac-payback-calculator
    Category:
    Customer Economics
    Description:
    CAC Payback: Payback months = CAC ÷ (monthly revenue per customer × gross margin). Methodology stated, your own inputs only.
    Keywords:
    cac payback calculator
    Inputs:
    Currency (symbol only, never converted) (choice), Customer acquisition cost (number), Revenue per customer per month (number), Gross margin (your figure) (number)
    Result:
    A main result with a supporting breakdown where relevant.
  • New Logo Revenue Calculator

    Address:
    /tools/new-logo-revenue-calculator
    Category:
    SaaS
    Description:
    New Logo Revenue: New logo ARR = new customers × average annual recurring value; MRR = ARR ÷ 12. Methodology stated, your own inputs only.
    Keywords:
    new logo revenue calculator
    Inputs:
    Currency (symbol only, never converted) (choice), New customers won in the period (number), Average first-year recurring value per new customer (number)
    Result:
    A main result with a supporting breakdown where relevant.
  • Average Deal Size Calculator

    Address:
    /tools/average-deal-size-calculator
    Category:
    Sales
    Description:
    Average Deal Size: Average deal size = total won value ÷ number of won deals. Methodology stated, your own inputs only.
    Keywords:
    average deal size calculator
    Inputs:
    Currency (symbol only, never converted) (choice), Total value of won deals (number), Number of won deals (number)
    Result:
    A main result with a supporting breakdown where relevant.
  • Burn Multiple Calculator

    Address:
    /tools/burn-multiple-calculator
    Category:
    SaaS
    Description:
    Burn Multiple: Burn multiple = net burn ÷ net new ARR (same period). Methodology stated, your own inputs only.
    Keywords:
    burn multiple calculator
    Inputs:
    Currency (symbol only, never converted) (choice), Net burn in the period (cash out minus cash in) (number), Net new ARR in the same period (number)
    Result:
    A main result with a supporting breakdown where relevant.
  • ROAS Calculator

    Address:
    /tools/roas-calculator
    Category:
    Marketing
    Description:
    ROAS: ROAS = attributed revenue ÷ ad spend. Methodology stated, your own inputs only.
    Keywords:
    roas calculator
    Inputs:
    Currency (symbol only, never converted) (choice), Revenue attributed to the ads (number), Ad spend (number)
    Result:
    A main result with a supporting breakdown where relevant.
  • Gross Revenue Retention Calculator

    Address:
    /tools/gross-revenue-retention-calculator
    Category:
    Customer Economics
    Description:
    Gross Revenue Retention: GRR = (starting recurring revenue − contraction − churn) ÷ starting recurring revenue × 100. Methodology stated, your own inputs only.
    Keywords:
    gross revenue retention calculator
    Inputs:
    Currency (symbol only, never converted) (choice), Recurring revenue at start of period (from existing customers) (number), Lost to downgrades (number), Lost to cancellations (number)
    Result:
    A main result with a supporting breakdown where relevant.
  • Campaign Break-Even Calculator

    Address:
    /tools/campaign-break-even-calculator
    Category:
    Marketing
    Description:
    Campaign Break-Even: Break-even ROAS = 1 ÷ gross margin. Methodology stated, your own inputs only.
    Keywords:
    campaign break-even calculator
    Inputs:
    Currency (symbol only, never converted) (choice), Average order value (number), Gross margin on an order (your figure) (number), Planned campaign spend (number)
    Result:
    A main result with a supporting breakdown where relevant.
  • Net Revenue Retention Calculator

    Address:
    /tools/net-revenue-retention-calculator
    Category:
    Customer Economics
    Description:
    Net Revenue Retention: NRR = (starting recurring revenue + expansion − contraction − churn) ÷ starting recurring revenue × 100. Methodology stated, your own inputs only.
    Keywords:
    net revenue retention calculator
    Inputs:
    Currency (symbol only, never converted) (choice), Recurring revenue at start of period (from existing customers) (number), Expansion (upsells, cross-sells, price increases) (number), Lost to downgrades (number), Lost to cancellations (number)
    Result:
    A main result with a supporting breakdown where relevant.
  • Pipeline Coverage Calculator

    Address:
    /tools/pipeline-coverage-calculator
    Category:
    Sales
    Description:
    Pipeline Coverage: Coverage = open pipeline ÷ remaining quota. Methodology stated, your own inputs only.
    Keywords:
    pipeline coverage calculator
    Inputs:
    Currency (symbol only, never converted) (choice), Open pipeline value for the period (number), Remaining quota or target for the period (number)
    Result:
    A main result with a supporting breakdown where relevant.
  • SaaS Break-Even Calculator

    Address:
    /tools/saas-break-even-calculator
    Category:
    SaaS
    Description:
    SaaS Break-Even: Break-even customers = monthly operating costs ÷ (average MRR per customer × gross margin). Methodology stated, your own inputs only.
    Keywords:
    saas break-even calculator
    Inputs:
    Currency (symbol only, never converted) (choice), Monthly operating costs (excluding cost of revenue) (number), Average MRR per customer (number), Gross margin (your figure) (number), Current paying customers (optional) (number)
    Result:
    A main result with a supporting breakdown where relevant.
  • Media Budget Calculator

    Address:
    /tools/media-budget-calculator
    Category:
    Marketing
    Description:
    Media Budget: Budget = target conversions ÷ conversion rate × cost per click. Methodology stated, your own inputs only.
    Keywords:
    media budget calculator
    Inputs:
    Currency (symbol only, never converted) (choice), Target conversions (number), Expected conversion rate from clicks (your figure) (number), Expected cost per click (your figure) (number)
    Result:
    A main result with a supporting breakdown where relevant.
  • Sales Velocity Calculator

    Address:
    /tools/sales-velocity-calculator
    Category:
    Sales
    Description:
    Sales Velocity: Velocity = (opportunities × average deal size × win rate) ÷ sales cycle length in days. Methodology stated, your own inputs only.
    Keywords:
    sales velocity calculator
    Inputs:
    Currency (symbol only, never converted) (choice), Qualified opportunities in pipeline (number), Average deal size (number), Win rate (your measured rate) (number), Average sales cycle (number)
    Result:
    A main result with a supporting breakdown where relevant.
  • Churn Rate Calculator

    Address:
    /tools/churn-rate-calculator
    Category:
    Customer Economics
    Description:
    Churn Rate: Customer churn = customers lost ÷ customers at start × 100. Methodology stated, your own inputs only.
    Keywords:
    churn rate calculator
    Inputs:
    Currency (symbol only, never converted) (choice), Customers at start of period (number), Customers lost during the period (number), Recurring revenue at start (optional) (number), Recurring revenue lost to cancellations and downgrades (optional) (number)
    Result:
    A main result with a supporting breakdown where relevant.
  • ACV Calculator

    Address:
    /tools/acv-calculator
    Category:
    Sales
    Description:
    ACV: ACV = total recurring contract value ÷ contract length in years. Methodology stated, your own inputs only.
    Keywords:
    acv calculator
    Inputs:
    Currency (symbol only, never converted) (choice), Total contract value (recurring fees only) (number), Contract length (number)
    Result:
    A main result with a supporting breakdown where relevant.
  • Reach Calculator

    Address:
    /tools/reach-calculator
    Category:
    Marketing
    Description:
    Reach: Reach = impressions ÷ average frequency. Methodology stated, your own inputs only.
    Keywords:
    reach calculator
    Inputs:
    Impressions (number), Average frequency (impressions per person) (number)
    Result:
    A main result with a supporting breakdown where relevant.
  • Expansion Rate Calculator

    Address:
    /tools/expansion-rate-calculator
    Category:
    Customer Economics
    Description:
    Expansion Rate: Expansion rate = expansion recurring revenue ÷ starting recurring revenue × 100. Methodology stated, your own inputs only.
    Keywords:
    expansion rate calculator
    Inputs:
    Currency (symbol only, never converted) (choice), Recurring revenue at start of period (existing customers) (number), Expansion revenue from those customers (number)
    Result:
    A main result with a supporting breakdown where relevant.
  • ARR Calculator

    Address:
    /tools/arr-calculator
    Category:
    Sales
    Description:
    ARR: ARR = MRR × 12. Methodology stated, your own inputs only.
    Keywords:
    arr calculator
    Inputs:
    Currency (symbol only, never converted) (choice), Monthly recurring revenue (MRR) (number)
    Result:
    A main result with a supporting breakdown where relevant.
  • Frequency Calculator

    Address:
    /tools/frequency-calculator
    Category:
    Marketing
    Description:
    Frequency: Frequency = impressions ÷ reach. Methodology stated, your own inputs only.
    Keywords:
    frequency calculator
    Inputs:
    Impressions (number), Reach (unique people) (number)
    Result:
    A main result with a supporting breakdown where relevant.
  • Revenue per Customer Calculator

    Address:
    /tools/revenue-per-customer-calculator
    Category:
    Customer Economics
    Description:
    Revenue per Customer: Revenue per customer = total revenue ÷ average customers in the period. Methodology stated, your own inputs only.
    Keywords:
    revenue per customer calculator
    Inputs:
    Currency (symbol only, never converted) (choice), Total revenue in the period (number), Average number of customers in the period (number)
    Result:
    A main result with a supporting breakdown where relevant.
  • ARPU Calculator

    Address:
    /tools/arpu-calculator
    Category:
    Customer Economics
    Description:
    ARPU: ARPU = monthly recurring revenue ÷ average paying users in the month. Methodology stated, your own inputs only.
    Keywords:
    arpu calculator
    Inputs:
    Currency (symbol only, never converted) (choice), Recurring revenue in the month (number), Average paying users (or accounts) in the month (number)
    Result:
    A main result with a supporting breakdown where relevant.
  • MRR Calculator

    Address:
    /tools/mrr-calculator
    Category:
    Sales
    Description:
    MRR: MRR = monthly-plan customers × average monthly fee + annual-plan fees ÷ 12. Methodology stated, your own inputs only.
    Keywords:
    mrr calculator
    Inputs:
    Currency (symbol only, never converted) (choice), Paying customers (number), Average monthly recurring fee per customer (number), Annual-plan revenue to normalise (0 if none) (number)
    Result:
    A main result with a supporting breakdown where relevant.
  • Sales Capacity Calculator

    Address:
    /tools/sales-capacity-calculator
    Category:
    Sales
    Description:
    Sales Capacity: Capacity = (ramped reps + ramping reps × ramp %) × quota × expected attainment. Methodology stated, your own inputs only.
    Keywords:
    sales capacity calculator
    Inputs:
    Currency (symbol only, never converted) (choice), Fully ramped reps (number), Reps still ramping (number), Full quota per rep for the period (number), Average productivity of ramping reps (your estimate) (number), Expected attainment (your historical figure) (number)
    Result:
    A main result with a supporting breakdown where relevant.
  • Sales Forecast Calculator

    Address:
    /tools/sales-forecast-calculator
    Category:
    Sales
    Description:
    Sales Forecast: Forecast = Σ (stage pipeline value × stage close probability). Methodology stated, your own inputs only.
    Keywords:
    sales forecast calculator
    Inputs:
    Currency (symbol only, never converted) (choice), Stage 1 pipeline value (number), Stage 1 close probability (your figure) (number), Stage 2 pipeline value (blank = none) (number), Stage 2 close probability (your figure) (blank = none) (number), Stage 3 pipeline value (blank = none) (number), Stage 3 close probability (your figure) (blank = none) (number), Stage 4 pipeline value (blank = none) (number), Stage 4 close probability (your figure) (blank = none) (number)
    Result:
    A main result with a supporting breakdown where relevant.
  • Quota Attainment Calculator

    Address:
    /tools/quota-attainment-calculator
    Category:
    Sales
    Description:
    Quota Attainment: Attainment = actual sales ÷ quota × 100. Methodology stated, your own inputs only.
    Keywords:
    quota attainment calculator
    Inputs:
    Currency (symbol only, never converted) (choice), Actual sales in the period (number), Quota for the period (number)
    Result:
    A main result with a supporting breakdown where relevant.
  • Employee Turnover Calculator

    Address:
    /tools/employee-turnover-calculator
    Category:
    HR Metrics
    Description:
    Employee Turnover: Turnover = leavers ÷ average headcount × 100, shown in total and split voluntary / involuntary. Methodology stated, your own inputs only.
    Keywords:
    employee turnover calculator
    Inputs:
    Voluntary leavers in the period (number), Involuntary leavers in the period (number), Average headcount in the period (number)
    Result:
    A main result with a supporting breakdown where relevant.
  • FTE Calculator

    Address:
    /tools/fte-calculator
    Category:
    Workforce
    Description:
    FTE: FTE = total hours worked ÷ full-time hours per person (same period). Methodology stated, your own inputs only.
    Keywords:
    fte calculator
    Inputs:
    Total hours worked by everyone in the period (number), Full-time hours for one person in the same period (your policy) (number)
    Result:
    A main result with a supporting breakdown where relevant.
  • Required Staff Calculator

    Address:
    /tools/required-staff-calculator
    Category:
    Staffing
    Description:
    Required Staff: Required staff = workload ÷ (paid hours × (1 − shrinkage)), rounded up. Methodology stated, your own inputs only.
    Keywords:
    required staff calculator
    Inputs:
    Workload hours in the period (number), Paid hours per person in the period (number), Shrinkage — share of paid time not available (your figure) (number)
    Result:
    A main result with a supporting breakdown where relevant.
  • Headcount Calculator

    Address:
    /tools/headcount-calculator
    Category:
    Workforce
    Description:
    Headcount: Average headcount = (start + end) ÷ 2. Methodology stated, your own inputs only.
    Keywords:
    headcount calculator
    Inputs:
    Headcount at the start of the period (number), Headcount at the end of the period (number)
    Result:
    A main result with a supporting breakdown where relevant.
  • Absence Rate Calculator

    Address:
    /tools/absence-rate-calculator
    Category:
    HR Metrics
    Description:
    Absence Rate: Absence rate = time lost to absence ÷ scheduled time × 100. Methodology stated, your own inputs only.
    Keywords:
    absence rate calculator
    Inputs:
    Hours (or days) lost to absence (number), Hours (or days) scheduled to work, same unit (number)
    Result:
    A main result with a supporting breakdown where relevant.
  • Shift Staffing Calculator

    Address:
    /tools/shift-staffing-calculator
    Category:
    Staffing
    Description:
    Shift Staffing: Staff = positions per shift × shifts per day × relief factor, rounded up. Methodology stated, your own inputs only.
    Keywords:
    shift staffing calculator
    Inputs:
    Positions to fill on each shift (number), Shifts per day (number), Relief factor (your figure, e.g. people per post incl. days off) (number)
    Result:
    A main result with a supporting breakdown where relevant.
  • Coverage Calculator

    Address:
    /tools/staff-coverage-calculator
    Category:
    Staffing
    Description:
    Coverage: Coverage = scheduled hours ÷ required hours × 100. Methodology stated, your own inputs only.
    Keywords:
    coverage calculator
    Inputs:
    Staff hours scheduled (number), Staff hours required (number)
    Result:
    A main result with a supporting breakdown where relevant.
  • Overtime Cost Calculator

    Address:
    /tools/overtime-cost-calculator
    Category:
    Workforce
    Description:
    Overtime Cost: Overtime cost = regular rate × multiplier × overtime hours. Methodology stated, your own inputs only.
    Keywords:
    overtime cost calculator
    Inputs:
    Currency (symbol only, never converted) (choice), Regular hourly rate (number), Overtime hours (number), Overtime multiplier (from your law or contract) (number)
    Result:
    A main result with a supporting breakdown where relevant.
  • Cost Per Hire Calculator

    Address:
    /tools/cost-per-hire-calculator
    Category:
    HR Metrics
    Description:
    Cost Per Hire: Cost per hire = (internal + external recruiting costs) ÷ hires. Methodology stated, your own inputs only.
    Keywords:
    cost per hire calculator
    Inputs:
    Currency (symbol only, never converted) (choice), Internal recruiting costs (recruiter time, referral bonuses) (number), External recruiting costs (agencies, ads, background checks) (number), Hires in the period (number)
    Result:
    A main result with a supporting breakdown where relevant.
  • Shift Differential Calculator

    Address:
    /tools/shift-differential-calculator
    Category:
    Workforce
    Description:
    Shift Differential: Differential per hour = base × % (or flat amount). Methodology stated, your own inputs only.
    Keywords:
    shift differential calculator
    Inputs:
    Currency (symbol only, never converted) (choice), Differential type (choice), Base hourly rate (number), Differential (your % or amount per hour) (number), Hours on the differential shift (number)
    Result:
    A main result with a supporting breakdown where relevant.
  • Time To Fill Calculator

    Address:
    /tools/time-to-fill-calculator
    Category:
    HR Metrics
    Description:
    Time To Fill: Time to fill = sum of days from opening to filling ÷ positions filled. Methodology stated, your own inputs only.
    Keywords:
    time to fill calculator
    Inputs:
    Total days open across all filled positions (number), Positions filled (number)
    Result:
    A main result with a supporting breakdown where relevant.
  • Workload Capacity Calculator

    Address:
    /tools/workload-capacity-calculator
    Category:
    Staffing
    Description:
    Workload Capacity: Capacity = people × available hours. Methodology stated, your own inputs only.
    Keywords:
    workload capacity calculator
    Inputs:
    People on the team (number), Available hours per person in the period (number), Workload demand in the period (number)
    Result:
    A main result with a supporting breakdown where relevant.
  • Staffing Requirement Calculator

    Address:
    /tools/staffing-requirement-calculator
    Category:
    Workforce
    Description:
    Staffing Requirement: Staff required = workload hours ÷ productive hours per person, rounded up. Methodology stated, your own inputs only.
    Keywords:
    staffing requirement calculator
    Inputs:
    Workload to cover in the period (number), Productive hours per person in the period (your figure) (number)
    Result:
    A main result with a supporting breakdown where relevant.
  • Offer Acceptance Rate Calculator

    Address:
    /tools/offer-acceptance-rate-calculator
    Category:
    HR Metrics
    Description:
    Offer Acceptance Rate: Offer acceptance rate = offers accepted ÷ offers made × 100. Methodology stated, your own inputs only.
    Keywords:
    offer acceptance rate calculator
    Inputs:
    Offers accepted (number), Offers made (number)
    Result:
    A main result with a supporting breakdown where relevant.
  • Billable Staffing Calculator

    Address:
    /tools/billable-staffing-calculator
    Category:
    Staffing
    Description:
    Billable Staffing: Staff = billable hours target ÷ (available hours × billable utilization), rounded up. Methodology stated, your own inputs only.
    Keywords:
    billable staffing calculator
    Inputs:
    Billable hours to deliver in the period (number), Available hours per person in the period (number), Billable utilization you plan for (your figure) (number)
    Result:
    A main result with a supporting breakdown where relevant.
  • Contractor Cost Calculator

    Address:
    /tools/contractor-cost-calculator
    Category:
    Staffing
    Description:
    Contractor Cost: Contractor cost = rate × hours × (1 + markup) + fixed costs. Methodology stated, your own inputs only.
    Keywords:
    contractor cost calculator
    Inputs:
    Currency (symbol only, never converted) (choice), Contractor hourly rate (number), Hours in the period (number), Agency or platform markup (your figure, 0 if none) (number), Other fixed costs (equipment, onboarding; 0 if none) (number)
    Result:
    A main result with a supporting breakdown where relevant.
  • Retention Rate Calculator

    Address:
    /tools/retention-rate-calculator
    Category:
    HR Metrics
    Description:
    Retention Rate: Retention rate = starting employees still employed at the end ÷ starting employees × 100. Methodology stated, your own inputs only.
    Keywords:
    retention rate calculator
    Inputs:
    Employees at the start of the period (number), Of those, still employed at the end (number)
    Result:
    A main result with a supporting breakdown where relevant.
  • Workforce Productivity Calculator

    Address:
    /tools/workforce-productivity-calculator
    Category:
    Workforce
    Description:
    Workforce Productivity: Labor productivity = output ÷ labor hours. Methodology stated, your own inputs only.
    Keywords:
    workforce productivity calculator
    Inputs:
    Output in the period (units, revenue or other measure) (number), Labor hours used (number)
    Result:
    A main result with a supporting breakdown where relevant.
  • Internal Mobility Calculator

    Address:
    /tools/internal-mobility-calculator
    Category:
    HR Metrics
    Description:
    Internal Mobility: Internal mobility = positions filled internally ÷ total positions filled × 100. Methodology stated, your own inputs only.
    Keywords:
    internal mobility calculator
    Inputs:
    Positions filled by internal candidates (number), Total positions filled (number)
    Result:
    A main result with a supporting breakdown where relevant.
  • Employee vs Contractor Cost Calculator

    Address:
    /tools/employee-vs-contractor-cost-calculator
    Category:
    Staffing
    Description:
    Employee vs Contractor Cost: Employee cost = salary × (1 + on-cost %) + other costs. Methodology stated, your own inputs only.
    Keywords:
    employee vs contractor cost calculator
    Inputs:
    Currency (symbol only, never converted) (choice), Employee annual salary (number), Employer on-costs (taxes, benefits) as % of salary — your figure (number), Other annual employee costs (equipment, training) (number), Contractor hourly rate (all-in) (number), Contractor hours per year (number)
    Result:
    A main result with a supporting breakdown where relevant.
  • Labor Cost Per Unit Calculator

    Address:
    /tools/labor-cost-per-unit-calculator
    Category:
    Workforce
    Description:
    Labor Cost Per Unit: Labor cost per unit = total labor cost ÷ units produced. Methodology stated, your own inputs only.
    Keywords:
    labor cost per unit calculator
    Inputs:
    Currency (symbol only, never converted) (choice), Total labor cost in the period (your loaded figure) (number), Units produced in the period (number)
    Result:
    A main result with a supporting breakdown where relevant.
  • Training Cost Per Employee Calculator

    Address:
    /tools/training-cost-per-employee-calculator
    Category:
    HR Metrics
    Description:
    Training Cost Per Employee: Training cost per employee = total training cost ÷ employees. Methodology stated, your own inputs only.
    Keywords:
    training cost per employee calculator
    Inputs:
    Currency (symbol only, never converted) (choice), Total training and development cost in the period (number), Average headcount (or employees trained) (number)
    Result:
    A main result with a supporting breakdown where relevant.
  • Electricity Cost Calculator

    Address:
    /tools/electricity-cost-calculator
    Category:
    Energy
    Description:
    Electricity Cost: Cost = kWh × price per kWh + fixed charge + billed kW × demand charge. Methodology stated, your own inputs only.
    Keywords:
    electricity cost calculator
    Inputs:
    Currency (symbol only, never converted) (choice), Energy used in the period (number), Your energy price per kWh (from your bill or a saved rate) (number), Fixed charge for the period (blank = none) (number), Billed peak demand (blank = none) (number), Demand charge per kW (blank = none) (number)
    Result:
    A main result with a supporting breakdown where relevant.
  • HVAC Load Calculator

    Address:
    /tools/hvac-load-calculator
    Category:
    Facilities
    Description:
    HVAC Load: Sensible kW = ρ × Q × cp × ΔT. Methodology stated, your own inputs only.
    Keywords:
    hvac load calculator
    Inputs:
    Airflow (number), Air density at your conditions (≈1.2 near sea level — enter yours) (number), Dry-bulb temperature difference (number), Humidity ratio difference (blank = sensible only) (number)
    Result:
    A main result with a supporting breakdown where relevant.
  • PUE Calculator

    Address:
    /tools/pue-calculator
    Category:
    Data Centers
    Description:
    PUE: PUE = total facility energy ÷ IT equipment energy. Methodology stated, your own inputs only.
    Keywords:
    pue calculator
    Inputs:
    Total facility energy in the period (number), IT equipment energy in the same period (number)
    Result:
    A main result with a supporting breakdown where relevant.
  • IT Load Calculator

    Address:
    /tools/it-load-calculator
    Category:
    Data Centers
    Description:
    IT Load: IT kW = servers × average W ÷ 1,000 + other IT kW. Methodology stated, your own inputs only.
    Keywords:
    it load calculator
    Inputs:
    Number of servers (number), Average measured power per server (number), Network, storage and other IT (blank = none) (number)
    Result:
    A main result with a supporting breakdown where relevant.
  • Motor Energy Cost Calculator

    Address:
    /tools/motor-energy-cost-calculator
    Category:
    Energy
    Description:
    Motor Energy Cost: Input kW = rated kW × load ÷ efficiency. Methodology stated, your own inputs only.
    Keywords:
    motor energy cost calculator
    Inputs:
    Currency (symbol only, never converted) (choice), Motor rated output (number), Average load (share of rated output) (number), Motor efficiency at that load (nameplate or manufacturer) (number), Running hours in the period (number), Your energy price per kWh (from your bill or a saved rate) (number)
    Result:
    A main result with a supporting breakdown where relevant.
  • Lighting Energy Calculator

    Address:
    /tools/lighting-energy-calculator
    Category:
    Facilities
    Description:
    Lighting Energy: kWh = fixtures × watts × hours per day × days ÷ 1,000. Methodology stated, your own inputs only.
    Keywords:
    lighting energy calculator
    Inputs:
    Currency (symbol only, never converted) (choice), Number of fixtures (number), Power per fixture incl. driver (number), Hours on per day (number), Days in the period (number), Your energy price per kWh (blank = energy only) (number)
    Result:
    A main result with a supporting breakdown where relevant.
  • Pump Energy Cost Calculator

    Address:
    /tools/pump-energy-cost-calculator
    Category:
    Energy
    Description:
    Pump Energy Cost: Hydraulic kW = ρ × g × Q × H ÷ 1,000. Methodology stated, your own inputs only.
    Keywords:
    pump energy cost calculator
    Inputs:
    Currency (symbol only, never converted) (choice), Flow rate (number), Total head (number), Fluid density (water ≈ 998 at 20 °C — enter yours) (number), Pump efficiency (pump curve) (number), Motor efficiency (number), Running hours (number), Your energy price per kWh (from your bill or a saved rate) (number)
    Result:
    A main result with a supporting breakdown where relevant.
  • Facility Load Calculator

    Address:
    /tools/facility-load-calculator
    Category:
    Data Centers
    Description:
    Facility Load: Facility kW = IT + cooling + distribution losses + other. Methodology stated, your own inputs only.
    Keywords:
    facility load calculator
    Inputs:
    IT load (number), Cooling plant electrical load (number), Power distribution and UPS losses (number), Lighting and other building loads (blank = none) (number)
    Result:
    A main result with a supporting breakdown where relevant.
  • Building Energy Cost Calculator

    Address:
    /tools/building-energy-cost-calculator
    Category:
    Facilities
    Description:
    Building Energy Cost: Cost = kWh × price. Methodology stated, your own inputs only.
    Keywords:
    building energy cost calculator
    Inputs:
    Currency (symbol only, never converted) (choice), Building energy use in the period (number), Your energy price per kWh (from your bill or a saved rate) (number), Floor area (number)
    Result:
    A main result with a supporting breakdown where relevant.
  • Fan Power Calculator

    Address:
    /tools/fan-power-calculator
    Category:
    Energy
    Description:
    Fan Power: Air kW = Q × Δp ÷ 1,000. Methodology stated, your own inputs only.
    Keywords:
    fan power calculator
    Inputs:
    Airflow (number), Fan total pressure rise (number), Fan total efficiency (fan curve) (number), Motor efficiency (number)
    Result:
    A main result with a supporting breakdown where relevant.
  • Cooling Energy Calculator

    Address:
    /tools/cooling-energy-calculator
    Category:
    Data Centers
    Description:
    Cooling Energy: Cooling kW = heat load ÷ COP. Methodology stated, your own inputs only.
    Keywords:
    cooling energy calculator
    Inputs:
    Heat to remove (usually IT load) (number), Cooling system COP (your plant's measured or rated figure) (number), Hours in the period (number)
    Result:
    A main result with a supporting breakdown where relevant.
  • Compressor Cost Calculator

    Address:
    /tools/compressor-cost-calculator
    Category:
    Energy
    Description:
    Compressor Cost: Cost = full-load input kW × average load × hours × price. Methodology stated, your own inputs only.
    Keywords:
    compressor cost calculator
    Inputs:
    Currency (symbol only, never converted) (choice), Compressor electrical input at full load (data sheet) (number), Average load in the period (number), Running hours (number), Your energy price per kWh (from your bill or a saved rate) (number)
    Result:
    A main result with a supporting breakdown where relevant.
  • Rack Power Calculator

    Address:
    /tools/rack-power-calculator
    Category:
    Data Centers
    Description:
    Rack Power: Rack kW = devices × W ÷ 1,000. Methodology stated, your own inputs only.
    Keywords:
    rack power calculator
    Inputs:
    Devices in the rack (number), Average measured power per device (number), Number of similar racks (blank = 1) (number), Supply voltage (blank = skip current) (number)
    Result:
    A main result with a supporting breakdown where relevant.
  • Compressed Air Cost Calculator

    Address:
    /tools/compressed-air-cost-calculator
    Category:
    Energy
    Description:
    Compressed Air Cost: kW = specific power × flow. Methodology stated, your own inputs only.
    Keywords:
    compressed air cost calculator
    Inputs:
    Currency (symbol only, never converted) (choice), Specific power (manufacturer data sheet) (number), Average air delivered (number), Hours in the period (number), Your energy price per kWh (from your bill or a saved rate) (number)
    Result:
    A main result with a supporting breakdown where relevant.
  • Data Center Energy Cost Calculator

    Address:
    /tools/data-center-energy-cost-calculator
    Category:
    Data Centers
    Description:
    Data Center Energy Cost: Cost = IT kW × PUE × hours × price. Methodology stated, your own inputs only.
    Keywords:
    data center energy cost calculator
    Inputs:
    Currency (symbol only, never converted) (choice), Average IT load (number), Your measured PUE (number), Hours in the period (number), Your energy price per kWh (from your bill or a saved rate) (number)
    Result:
    A main result with a supporting breakdown where relevant.
  • Energy Per Rack Calculator

    Address:
    /tools/energy-per-rack-calculator
    Category:
    Data Centers
    Description:
    Energy Per Rack: Energy per rack = energy ÷ occupied racks. Methodology stated, your own inputs only.
    Keywords:
    energy per rack calculator
    Inputs:
    Energy in the period (facility or IT — state which) (number), Occupied racks (number)
    Result:
    A main result with a supporting breakdown where relevant.
  • Generator Fuel Cost Calculator

    Address:
    /tools/generator-fuel-cost-calculator
    Category:
    Energy
    Description:
    Generator Fuel Cost: Fuel = L/h × hours. Methodology stated, your own inputs only.
    Keywords:
    generator fuel cost calculator
    Inputs:
    Currency (symbol only, never converted) (choice), Fuel use at your load (manufacturer fuel curve) (number), Running hours (number), Your fuel price per litre (number), Average electrical output (blank = skip cost per kWh) (number)
    Result:
    A main result with a supporting breakdown where relevant.
  • Solar Output Calculator

    Address:
    /tools/solar-output-calculator
    Category:
    Energy
    Description:
    Solar Output: Output = kWp × peak sun hours × performance ratio × days. Methodology stated, your own inputs only.
    Keywords:
    solar output calculator
    Inputs:
    Array size (DC rating) (number), Peak sun hours per day at your site (from a solar resource map) (number), Performance ratio / derate (your estimate or design tool) (number), Days in the period (number)
    Result:
    A main result with a supporting breakdown where relevant.
  • Energy Per Workload Calculator

    Address:
    /tools/energy-per-workload-calculator
    Category:
    Data Centers
    Description:
    Energy Per Workload: Energy per unit = energy ÷ work units. Methodology stated, your own inputs only.
    Keywords:
    energy per workload calculator
    Inputs:
    Energy attributable to the workload (number), Work units in the same period (requests, jobs, users…) (number)
    Result:
    A main result with a supporting breakdown where relevant.
  • Energy Savings Payback Calculator

    Address:
    /tools/energy-savings-payback-calculator
    Category:
    Energy
    Description:
    Energy Savings Payback: Payback (years) = upfront cost ÷ (kWh saved × price + other yearly savings). Methodology stated, your own inputs only.
    Keywords:
    energy savings payback calculator
    Inputs:
    Currency (symbol only, never converted) (choice), Upfront cost of the upgrade (number), Energy saved per year (number), Your energy price per kWh (from your bill or a saved rate) (number), Other yearly savings, e.g. maintenance (blank = none) (number)
    Result:
    A main result with a supporting breakdown where relevant.
  • Thermal Energy Calculator

    Address:
    /tools/thermal-energy-calculator
    Category:
    Energy
    Description:
    Thermal Energy: Q = m × c × ΔT (kJ). Methodology stated, your own inputs only.
    Keywords:
    thermal energy calculator
    Inputs:
    Mass (number), Specific heat of your material (water ≈ 4.186) (number), Temperature change (number)
    Result:
    A main result with a supporting breakdown where relevant.
  • Boiler Efficiency Calculator

    Address:
    /tools/boiler-efficiency-calculator
    Category:
    Energy
    Description:
    Boiler Efficiency: Efficiency = useful heat output ÷ fuel energy input × 100 (direct method). Methodology stated, your own inputs only.
    Keywords:
    boiler efficiency calculator
    Inputs:
    Useful heat output (steam or hot water) (number), Fuel energy input (fuel used × heating value, same unit) (number)
    Result:
    A main result with a supporting breakdown where relevant.
  • Occupancy Rate Calculator

    Address:
    /tools/hospital-occupancy-rate-calculator
    Category:
    Healthcare Operations
    Description:
    Period bed occupancy from inpatient days divided by available bed-days. Descriptive clinical metric, not a safety threshold.
    Keywords:
    occupancy rate calculator
    Inputs:
    Inpatient days of care in the period (number), Total available bed-days in the same period (number)
    Result:
    A main result with a supporting breakdown where relevant.
  • Molarity Calculator

    Address:
    /tools/molarity-calculator
    Category:
    Life Sciences
    Description:
    Molar concentration from solute mass, verified molar mass and final solution volume. Scientific equation, not medication preparation.
    Keywords:
    molarity calculator
    Inputs:
    Solute mass (number), Molar mass for your material (number), Final solution volume (number)
    Result:
    A main result with a supporting breakdown where relevant.
  • Weighted Mean Calculator

    Address:
    /tools/weighted-mean-calculator
    Category:
    Statistics
    Description:
    Weighted arithmetic mean using your explicit nonnegative weights. Scientific equation with no inferred weighting scheme.
    Keywords:
    weighted mean calculator
    Inputs:
    Observations (text), Nonnegative weights in observation order (text)
    Result:
    A main result with a supporting breakdown where relevant.
  • Laboratory Dilution Calculator

    Address:
    /tools/laboratory-dilution-calculator
    Category:
    Life Sciences
    Description:
    Conserved-solute dilution using C1V1=C2V2 with matching concentration units and final volume. No medication instructions.
    Keywords:
    laboratory dilution calculator
    Inputs:
    Stock concentration (same units as target) (number), Target concentration (same units as stock) (number), Final solution volume (number)
    Result:
    A main result with a supporting breakdown where relevant.
  • Average Length of Stay Calculator

    Address:
    /tools/average-length-of-stay-calculator
    Category:
    Healthcare Operations
    Description:
    Mean completed inpatient stay from matching discharge-cohort days and discharges. No case-mix or treatment recommendation.
    Keywords:
    average length of stay calculator
    Inputs:
    Sum of completed lengths of stay for the discharge cohort (number), Discharges in that cohort (including deaths) (number)
    Result:
    A main result with a supporting breakdown where relevant.
  • Median Calculator

    Address:
    /tools/median-calculator
    Category:
    Statistics
    Description:
    Unweighted middle ordered observation or average of the two middle values. Scientific descriptive statistic.
    Keywords:
    median calculator
    Inputs:
    Observations (text)
    Result:
    A main result with a supporting breakdown where relevant.
  • Molecular Weight Calculator

    Address:
    /tools/molecular-weight-calculator
    Category:
    Life Sciences
    Description:
    Sum atom counts times explicitly supplied versioned atomic weights. Relative formula mass and conventional molar mass are distinguished.
    Keywords:
    molecular weight calculator
    Inputs:
    Atom counts in distinct element order (text), Verified relative atomic weights, in the same element order (text), Atomic-weight source and version (text)
    Result:
    A main result with a supporting breakdown where relevant.
  • Standard Error Calculator

    Address:
    /tools/standard-error-calculator
    Category:
    Statistics
    Description:
    Estimated standard error of mean s/sqrt(n) for independent observations. Distinct from individual observation spread.
    Keywords:
    standard error calculator
    Inputs:
    Observations (text)
    Result:
    A main result with a supporting breakdown where relevant.
  • Patient Cost Calculator

    Address:
    /tools/patient-cost-calculator
    Category:
    Healthcare Operations
    Description:
    Average entered direct and allocated cost per unique patient. Business estimate, not reimbursement or a patient bill.
    Keywords:
    patient cost calculator
    Inputs:
    Currency (symbol only, never converted) (choice), Included direct costs (number), Allocated indirect costs (enter zero if excluded) (number), Unique patients receiving the included services (number)
    Result:
    A main result with a supporting breakdown where relevant.
  • Reaction Yield Calculator

    Address:
    /tools/reaction-yield-calculator
    Category:
    Life Sciences
    Description:
    Actual isolated product divided by verified theoretical product. Scientific reaction yield, distinct from manufacturing good-unit yield.
    Keywords:
    reaction yield calculator
    Inputs:
    Isolated actual product amount (same units as theoretical) (number), Verified stoichiometric theoretical amount (same units) (number)
    Result:
    A main result with a supporting breakdown where relevant.
  • Confidence Interval Calculator

    Address:
    /tools/mean-confidence-interval-calculator
    Category:
    Statistics
    Description:
    Two-sided Student t interval for a population mean with unknown variance. Enter confidence level explicitly; assumptions stated.
    Keywords:
    confidence interval calculator
    Inputs:
    Observations (text), Two-sided confidence level (enter explicitly) (number)
    Result:
    A main result with a supporting breakdown where relevant.
  • Cost per Case Calculator

    Address:
    /tools/cost-per-case-calculator
    Category:
    Healthcare Operations
    Description:
    Average entered direct and allocated cost per completed case. User-defined business estimate, not a payment methodology.
    Keywords:
    cost per case calculator
    Inputs:
    Currency (symbol only, never converted) (choice), Included direct costs (number), Allocated indirect costs (enter zero if excluded) (number), Completed cases in the same cost scope (number)
    Result:
    A main result with a supporting breakdown where relevant.
  • Cost per Patient Day Calculator

    Address:
    /tools/cost-per-patient-day-calculator
    Category:
    Healthcare Operations
    Description:
    Average included cost divided by matching patient-days. Business estimate with explicit cost scope.
    Keywords:
    cost per patient day calculator
    Inputs:
    Currency (symbol only, never converted) (choice), Included direct costs (number), Allocated indirect costs (enter zero if excluded) (number), Patient-days in the same cost scope (number)
    Result:
    A main result with a supporting breakdown where relevant.
  • Concentration Calculator

    Address:
    /tools/mass-concentration-calculator
    Category:
    Life Sciences
    Description:
    Mass concentration in g/L from solute grams and final solution litres. No inferred ppm or clinical interpretation.
    Keywords:
    concentration calculator
    Inputs:
    Solute mass (number), Final solution volume (number)
    Result:
    A main result with a supporting breakdown where relevant.
  • Z Score Calculator

    Address:
    /tools/z-score-calculator
    Category:
    Statistics
    Description:
    Standardized score from your entered mean and standard deviation. No normal distribution or medical risk inferred.
    Keywords:
    z score calculator
    Inputs:
    Observation x (number), Reference population mean μ (number), Reference population standard deviation σ (number)
    Result:
    A main result with a supporting breakdown where relevant.
  • Procedure Cost Calculator

    Address:
    /tools/procedure-cost-calculator
    Category:
    Healthcare Operations
    Description:
    Average direct and allocated cost per completed procedure. Business estimate, not a claim amount or tariff.
    Keywords:
    procedure cost calculator
    Inputs:
    Currency (symbol only, never converted) (choice), Included direct costs (number), Allocated indirect costs (enter zero if excluded) (number), Completed procedures in the same cost scope (number)
    Result:
    A main result with a supporting breakdown where relevant.
  • Cost per Dose Calculator

    Address:
    /tools/cost-per-dose-calculator
    Category:
    Life Sciences
    Description:
    Production batch cost per usable standardized finished dose. Business estimate only, never a patient dose recommendation.
    Keywords:
    cost per dose calculator
    Inputs:
    Currency (symbol only, never converted) (choice), Total included production batch cost (number), Usable standardized finished doses in the batch (number)
    Result:
    A main result with a supporting breakdown where relevant.
  • Percent Error Calculator

    Address:
    /tools/percent-error-calculator
    Category:
    Statistics
    Description:
    Absolute reference-relative error using the accepted reference magnitude. Zero reference is undefined.
    Keywords:
    percent error calculator
    Inputs:
    Measured value (number), Accepted reference value (number)
    Result:
    A main result with a supporting breakdown where relevant.
  • Percent Difference Calculator

    Address:
    /tools/percent-difference-calculator
    Category:
    Statistics
    Description:
    Symmetric mean-normalized difference between nonnegative peer measurements. Distinct from reference-relative error.
    Keywords:
    percent difference calculator
    Inputs:
    First nonnegative measurement (number), Second nonnegative measurement (number)
    Result:
    A main result with a supporting breakdown where relevant.
  • Healthcare Staffing Ratio Calculator

    Address:
    /tools/healthcare-staffing-ratio-calculator
    Category:
    Healthcare Operations
    Description:
    Concurrent patients divided by concurrent included staff. Descriptive clinical metric, not a legally required or safe staffing level.
    Keywords:
    healthcare staffing ratio calculator
    Inputs:
    Patients present at the census time (number), Staff present in the stated role at the same time (number)
    Result:
    A main result with a supporting breakdown where relevant.
  • Regression Calculator

    Address:
    /tools/linear-regression-calculator
    Category:
    Statistics
    Description:
    Unweighted ordinary least-squares line with intercept, slope and R-squared. No causal or clinical inference.
    Keywords:
    regression calculator
    Inputs:
    Observations (text), Paired response values y (text)
    Result:
    A main result with a supporting breakdown where relevant.
  • Nursing Hours Calculator

    Address:
    /tools/nursing-hours-per-patient-day-calculator
    Category:
    Healthcare Operations
    Description:
    Unadjusted included nursing hours per patient-day. Not the CMS case-mix-adjusted SNF staffing measure.
    Keywords:
    nursing hours calculator
    Inputs:
    Included productive nursing hours in the period (number), Patient-days in the same ward and period (number)
    Result:
    A main result with a supporting breakdown where relevant.
  • Correlation Calculator

    Address:
    /tools/pearson-correlation-calculator
    Category:
    Statistics
    Description:
    Pearson product-moment linear correlation of paired observations. No significance test or causation claim.
    Keywords:
    correlation calculator
    Inputs:
    Observations (text), Paired values y (text)
    Result:
    A main result with a supporting breakdown where relevant.
  • Readmission Rate Calculator

    Address:
    /tools/crude-readmission-rate-calculator
    Category:
    Healthcare Operations
    Description:
    Crude proportion of eligible index discharges with qualifying readmission within your specified window. Not risk-standardized or a payment model.
    Keywords:
    readmission rate calculator
    Inputs:
    Eligible index discharges with at least one qualifying readmission (number), Eligible index discharges with complete follow-up (number), Your defined follow-up window (number)
    Result:
    A main result with a supporting breakdown where relevant.
  • Clinic Break-Even Calculator

    Address:
    /tools/clinic-break-even-calculator
    Category:
    Healthcare Operations
    Description:
    Single-service cost-volume-profit estimate using entered expected collections and variable costs. No reimbursement formula.
    Keywords:
    clinic break-even calculator
    Inputs:
    Currency (symbol only, never converted) (choice), Fixed operating costs in the period (number), Expected net collection per completed service (number), Variable cost per completed service (number)
    Result:
    A main result with a supporting breakdown where relevant.
  • Measurement Uncertainty Calculator

    Address:
    /tools/measurement-uncertainty-calculator
    Category:
    Statistics
    Description:
    GUM first-order uncorrelated uncertainty budget with entered sensitivities and coverage factor. Coverage probability is not inferred.
    Keywords:
    measurement uncertainty calculator
    Inputs:
    Input standard uncertainties uᵢ (not raw observations) (text), Sensitivity coefficients cᵢ in matching order (text), Declared coverage factor k (not a confidence percentage) (number)
    Result:
    A main result with a supporting breakdown where relevant.