CAC Calculator
CAC: CAC = acquisition spend ÷ new customers acquired, for the same period. Methodology stated, your own inputs only.
In short
CAC: CAC = acquisition spend ÷ new customers acquired, for the same period. Methodology stated, your own inputs only.
Formula: CAC = acquisition spend ÷ new customers acquired, for the same period.
What this calculator does
CAC: CAC = acquisition spend ÷ new customers acquired, for the same period. Methodology stated, your own inputs only. Worked example, questions and limitations included.
Use it to turn Currency (symbol only, never converted), CAC definition, Marketing spend in the period, Sales cost in the period (salaries, tools; 0 for paid-only), and the other shown inputs 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 customer economics calculation.
Inputs and what they mean
- Currency (symbol only, never converted)
- — choice value.
- CAC definition
- — choice value.
- Marketing spend in the period
- — number value.
- Sales cost in the period (salaries, tools; 0 for paid-only)
- — number value.
- New customers acquired in the period
- — number value.
How to use it
- Enter each value in the unit shown next to the box (use the unit converter first if your numbers are in other units).
- Check the breakdown to see every intermediate step.
- Read the limitations before relying on the result.
Formula
Methodology: you choose fully loaded (sales and marketing costs) or paid-marketing-only CAC; the page states which was used.
Spend and customers must cover the same period; long sales cycles may need a lag.
No industry CAC value is assumed.
CAC = acquisition spend ÷ new customers acquired, for the same period.
Inputs used: Currency (symbol only, never converted), CAC definition, Marketing spend in the period, Sales cost in the period (salaries, tools; 0 for paid-only), New customers acquired in the period.
Worked example
A quarter
- Spend = $150,000.
- 150,000 ÷ 100 = $1,500.
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
- Single period, no lag.
- Organic customers lower blended CAC.
- Results are educational estimates built only from the figures you enter. They are not personalised investment, tax, legal or accounting advice. Rates, growth and discount assumptions are always yours to choose.
- The result depends on the values you enter for this cac calculator; it does not supply missing rates, rules, prices, dates, or assumptions for you.
Reference: OpenStax
Last reviewed:
Common questions
Fully loaded or paid?
Fully loaded shows the true cost to acquire; paid-only is useful for comparing channels. Always say which you report.
Should existing-customer upsells count?
No — CAC divides by new customers only. Check the formula, example, and limitations on this page before using the result for a real customer economics decision.
What is a good value?
We don't assume an industry-standard figure. Compare against your own history and plan, not a rule of thumb.
How do I use the CAC Calculator?
Enter the required values for Currency (symbol only, never converted), CAC definition, Marketing spend in the period, Sales cost in the period (salaries, tools; 0 for paid-only), New customers acquired in the period. 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 CAC Calculator use?
CAC = acquisition spend ÷ new customers acquired, for the same period. 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.
Can the CAC 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.
Sources
Method based on OpenStax.
Cite this page
Free Calculator. (2026, October 15). CAC Calculator. https://freecalculator.tech/tools/cac-calculator
"CAC Calculator." Free Calculator, 15 Oct. 2026, https://freecalculator.tech/tools/cac-calculator.
CAC Calculator — Free Calculator, https://freecalculator.tech/tools/cac-calculator
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