CPA Calculator
Work out your cost per acquisition.
About the CPA Calculator
Calculate cost per acquisition free: total spend ÷ conversions. Whether a “conversion” is a sale, a signup, or a lead, CPA tells you what each one actually costs — the number that decides if a campaign is sustainable. Keep CPA comfortably below the profit a customer generates (and well below lifetime value) and you can scale with confidence; let it creep above and every conversion loses money.
How to use the CPA Calculator
- 1Enter your total cost and number of conversions.
- 2Read the result instantly — it recalculates as you type.
- 3Adjust the numbers to model different scenarios.
Frequently asked questions
How do you calculate CPA?
CPA = total cost ÷ conversions. It's the average cost to acquire one customer or conversion.
How does CPA relate to profitability?
Keep CPA below the profit a customer generates (and ideally well below LTV) for campaigns to be sustainable.
CPA vs CAC — are they the same?
Close cousins: CPA usually measures cost per conversion in a campaign; CAC is the fully-loaded business metric (all sales & marketing spend per new customer).