Calculate cost per acquisition (CPA) from campaign spend and acquired customers or conversions.
CPC, CPM, CTR, conversion rate, acquisition cost and customer-value calculations.
Enter the values requested above and select Calculate. Change any input to compare another scenario. The calculation runs locally in your browser and does not require an account.
A $5,000 campaign that generates 100 new customers has a $50 CPA.
Calculate cost per acquisition (CPA) from campaign spend and acquired customers or conversions. The result is intended for quick estimates, checking arithmetic and comparing scenarios. When a result affects a contract, tax filing, medical decision, building-code requirement or other high-stakes situation, verify the result with the appropriate professional or authoritative source.
If a campaign spends $3,600 and produces 90 defined acquisitions, CPA is $3,600 ÷ 90 = $40 per acquisition. Use the same attribution window for spend and acquisition counts.
What to check: An acquisition might mean a lead, registration, or sale. Define it consistently; a low CPA does not necessarily imply profitable customers or high customer lifetime value.
Compare with the Customer Acquisition Cost calculator when that better matches the question you are trying to answer.
Calculate cost per acquisition (CPA) from campaign spend and acquired customers or conversions.
CPA = total acquisition spend ÷ acquired customers.
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