Cost per Function Point Calculator
Express what a delivery cost in money per unit of functional size.
In short
Express what a delivery cost in money per unit of functional size.
Formula: Cost per function point = Total project cost ÷ Function points delivered
What this calculator does
A straight unit cost over IFPUG functional size. The cost is whatever the organisation entered; no rate or cost baseline is supplied.
Use it to turn Currency, Total project cost, Function points delivered into a checked result you can compare, copy, or rerun with different assumptions.
The page shows the formula, a numeric worked example, and the assumptions that affect this professional & industry calculation.
Inputs and what they mean
- Currency
- — Amounts are shown in the currency you pick. No exchange rate is applied..
- Total project cost
- — number value.
- Function points delivered
- — number value.
How to use it
- Enter your own figures — the calculator never fills in a rate, price or benchmark for you.
- Press Calculate to see the result.
- Read the formula, variables, assumptions and source below the result before you rely on it.
Formula
Cost per function point = Total project cost ÷ Function points delivered.
Inputs used: Currency, Total project cost, Function points delivered.
Edge handling: Total project cost is required.; Total project cost cannot be negative.; Total project cost must be no more than 1000000000000.; Function points delivered is required.; Function points delivered cannot be negative..
Worked example
$540,000 for 480 function points
- Start with Currency: USD, Total project cost: 540000, Function points delivered: 480.
- Apply the method: Cost per function point = Total project cost ÷ Function points delivered.
- The cost is whatever your project actually cost; nothing is assumed about it.
Reading the result
The headline figure is the main answer. Any breakdown underneath shows the parts that make it up, so you can check the working and see what changes when you adjust an input.
Limitations and assumptions
- Inputs outside the supported range are rejected rather than forced into a result.
- The result depends on the values you enter for this cost per function point calculator; it does not supply missing rates, rules, prices, dates, or assumptions for you.
Reference: International Function Point Users Group — Function Point Counting Practices
Last reviewed:
Common questions
Where does this formula come from?
IFPUG, Function Point Counting Practices Manual — functional size is counted independently of technology, and delivery rate is effort per unit of functional size. See the source link on this page.
What kind of calculation is this?
Total cost is divided by counted functional size to give a unit cost independent of language and team. Check the formula, example, and limitations on this page before using the result for a real professional & industry decision.
What are its limits?
A unit cost, not a price. Comparable only across projects costed and counted the same way.
How do I use the Cost per Function Point Calculator?
Enter the required values for Currency, Total project cost, Function points delivered. The calculator applies the formula on this page and shows the main result with any supporting breakdown so you can check the arithmetic.
What formula does the Cost per Function Point Calculator use?
Cost per function point = Total project cost ÷ Function points delivered The visible formula section above lists the calculation path and the edge cases the page handles, so the result can be checked without relying on the form alone. Check the formula, example, and limitations on this page before using the result for a real professional & industry decision.
Can the Cost per Function Point Calculator be used for exact decisions?
Use it as a calculation aid, not as a substitute for checking the underlying rule, contract, policy, or professional advice that applies to your situation. When a result depends on local rules, personal details, prices, or dates, enter those values yourself and confirm them before acting.
Formula, source and verification
Total cost is divided by counted functional size to give a unit cost independent of language and team.
The question it answers: What did each unit of delivered functionality cost us?
The formula
Cost per function point = Total project cost ÷ Function points delivered
- C — Total project cost
- (currency). Everything the project cost, as the organisation accounts for it.
- FP — Function points delivered
- (FP). Unadjusted function points counted for the delivered software.
Units: Currency; function points; currency per function point.
What kind of calculation this is
Deterministic formula. The same inputs always give the same answer. The maths is fixed and does not depend on judgement.
Method
A straight unit cost over IFPUG functional size. The cost is whatever the organisation entered; no rate or cost baseline is supplied.
Assumptions built into the result
- Mathematical: The cost entered covers the same scope as the counted function points.
Figures this calculator will never guess for you
- No industry delivery rate, productivity figure, defect rate or cost per line is inserted.
- No optional component is filled in on the user's behalf.
Limitations
- A unit cost, not a price.
- Comparable only across projects costed and counted the same way.
Source and version
- Standard or reference
- Function point analysis — delivery rate measures — International Function Point Users Group (IFPUG, Function Point Counting Practices Manual — functional size is counted independently of technology, and delivery rate is effort per unit of functional size.)
- Published source
- International Function Point Users Group — CPM 4.3.1 family
- Formula version
- Version 1
- Verification
- Reviewed against the cited source on
- How much weight the source carries
- Standards or government
- Applies to
- Currency
- Amounts stay in the currency you choose; no exchange rate is applied.
Cite this page
Free Calculator. (2026, September 16). Cost per Function Point Calculator. https://freecalculator.tech/tools/cost-per-function-point-calculator
"Cost per Function Point Calculator." Free Calculator, 16 Sept. 2026, https://freecalculator.tech/tools/cost-per-function-point-calculator.
Cost per Function Point Calculator — Free Calculator, https://freecalculator.tech/tools/cost-per-function-point-calculator
Related tools
Work out the hourly rate to charge a client so that target margin is met after overhead and non-billable time.
Find the true hourly cost of an employee once benefits, payroll cost and overhead are included.
Size a software application from its data and transaction functions before estimating effort or cost.
Estimate development effort, schedule and average team size for a software project of a known size.
Express cloud spend as a cost per customer, per transaction or per other business unit.
Set the rate used to apply manufacturing overhead to jobs for the coming period.