CPA Calculator (CPM → CPC → CPA)

Estimate CPC and CPA from CPM, CTR and CVR. Optionally compute break-even CPA from AOV, margin, fees and refunds.

Inputs

Enter values. Percent fields accept 0–100.

CPM

CTR (%)

CVR (%)

Override CPC (optional)

AOV / Revenue per order

Gross margin (%)

Fees + shipping (%)

Refund rate (%)

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Estimated CPC

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Estimated CPA

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Break-even CPA (from unit economics)

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Formulas: CPC = CPM / (1000 × CTR). CPA = CPC / CVR.