Marketing & ecommerce

Cost per Acquisition / Action Calculator

Measure media cost per attributed conversion action.

No sign-upBrowser-only calculationsFormula & methodology
01

Your numbers

Use one currency and the same reporting period. Sample values are filled in to help you start.

currency
actions

Your numbers stay in this browser.

02

Example result

Cost per action30in your chosen currency

Conversion actions can include repeat orders or fractional attribution. This is not full customer acquisition cost (CAC).

Understand the result

How to calculate it

CPA = campaign spend ÷ attributed conversion actions

Conversion actions can include repeat orders or fractional attribution. This is not full customer acquisition cost (CAC).

Worked example

This is an illustrative scenario, not a market benchmark. Select “Reset to example” to reproduce it in the calculator.

Campaign media spend
2,400 currency units
Attributed conversions
80 actions

Cost per action: 30

Common questions

Cost per Acquisition / Action FAQ

Why can CPA differ from CAC?

CPA uses a defined campaign action. CAC counts new customers and can include sales payroll, software and other acquisition costs.

What does this calculation leave out?

Conversion actions can include repeat orders or fractional attribution. This is not full customer acquisition cost (CAC).

Are my inputs saved or sent to a server?

Calculations run in your browser. We do not send your inputs or results to our server or analytics. A comparison stays in this tab until it is refreshed. A CSV is saved only when you choose to download it. See our privacy policy for ordinary hosting and optional analytics data.

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