CB
Marketing tool
CPA Calculator
Work out cost per acquisition from spend and conversions.
Fast outputSimple calculator, clear answer.
Mobile readyEasy to use on phone or desktop.
Related next stepsJump to nearby tools after.
Use the cpa calculator
Work out cost per acquisition from spend and conversions.
Total campaign spend
Number of acquisitions or sales
Optional revenue for context
Enter your values to see the result.
CPA Calculator formula
CPA = ad spend ÷ conversions
What this helps with
Use this tool for a fast estimate before checking a full spreadsheet, payslip, quote or planning document.
Worked example
If you spend £500 and get 25 conversions, your CPA is £20.
Best use
Compare scenarios quickly by changing one or two inputs at a time.
Frequently asked questions
What counts as an acquisition?
Use the action that matters most to you, such as a sale, lead or booked call.
Can CPA be compared to AOV?
Yes. It is a useful way to judge whether acquisition cost is sustainable.
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