Free CPA Calculator
Use this free CPA calculator to measure cost per acquisition, estimate break-even CPA, compare your target gap, and plan the next creative test.
Compare acquisition cost against target and break-even economics.
Your CPA readout will appear here
Calculate acquisition cost, break-even CPA, and creative next steps for a paid social campaign.
Break-even CPA formula
Revenue per acquisition × gross margin
This is the maximum acquisition cost before ad spend consumes the gross profit from that acquisition. It does not include overhead, returns, or fulfillment costs outside the margin input.
Worked example
From a $120 order to a practical CPA target
A $120 average order value at a 60% gross margin produces a $72 break-even CPA. If the business wants a 20% contribution margin after advertising, reserve $24 per order and set a practical target CPA of $48. A current CPA of $60 is profitable before overhead, but still $12 above that target.
Check the same economics with the ROAS calculatorHow it works
Calculate CPA and creative next steps
Add spend, acquisitions, optional revenue or AOV, gross margin, target CPA, platform, and industry.
Get current CPA, break-even CPA, target comparison, and the dollar gap between the current result and target.
Use the recommendations to decide whether to refresh hooks, proof moments, CTAs, or whole video ad variants.
FAQ
CPA Calculator FAQs
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