About the CPA Calculator
Cost per acquisition (CPA) — cost per conversion or sale — from total campaign spend and conversions.
Also known as: cost per acquisition, cost per conversion, cost per action, cost-per-conversion.
How to use this calculator
- Enter campaign spend, conversions.
- The result updates instantly as you type — press Calculate (or Enter) at any time.
- Open “Step-by-step” to see how the answer was worked out.
- Use Copy result or Share to save the answer or send a link with your inputs.
Formula
CPA = Campaign spend ÷ Conversions
Worked example
Using the values pre-filled in the calculator above:
- Campaign spend = 5,000
- Conversions = 125
the calculator returns:
- CPA: 40
Working
CPA = 5,000 ÷ 125 = 40