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CPA Calculator: Cost per Acquisition (Free)

Enter your ad spend and the number of purchases (or leads) it produced. CPA is spend divided by conversions.

The CPA formula

CPA = ad spend ÷ conversions. $2,500 of spend for 80 purchases is a CPA of $31.25. Compare it with your maximum CPA (order value × gross margin) from the break-even calculator.

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Questions

What does CPA mean?

Cost per acquisition (or cost per action): what you pay in ads for one purchase, lead or sign-up.

What is a good CPA?

One below your maximum CPA, which is your order value multiplied by your gross margin.

What is the difference between CPA and CAC?

CPA usually counts ad spend per conversion in an ad platform. CAC counts every acquisition cost (ads, tools, salaries) per new customer.

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