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CPA Calculator

Calculate the average advertising cost for a recorded conversion action.

Use a consistent reporting periodCheck the calculation below

Your business figures

Runs on your device

METRIC SNAPSHOT

Your result

Let’s calculate.

Use the Calculate button to see your result.

Review the method below for assumptions and conventions.

How to use this tool

  1. Enter advertising spend, attributed conversions.
  2. Select Calculate to view the result.
  3. Check the method and assumptions below before using the result.

The method, explained

Average CPA = advertising spend ÷ attributed conversions. Define the conversion action before comparing campaigns. Fractional attributed conversions are supported.

A WORKED EXAMPLE

A spend of 1,200 with 40 attributed conversions gives an average CPA of 30. If those conversions are leads, this is cost per lead rather than cost per new customer.

What to keep in mind

The figure depends on conversion definitions, attribution windows and reporting rules. It does not automatically include sales salaries or other acquisition costs.

Reference: Google Ads: average CPA

Common questions

Can conversions be fractional?

Yes. Some attribution models divide conversion credit across interactions. Enter the reported attributed total rather than rounding it to whole actions.

Is actual CPA the same as target CPA?

No. A target is a campaign setting; this calculation reports average cost from the spend and conversions you enter.

Methodology maintained by ClarityKit. How these tools are built and checked.