CPA Calculator

Calculate cost per acquisition from campaign spend and conversions, with the CPA formula, a worked example and instant browser-based results.

How do you calculate cost per acquisition (CPA)?

Cost per acquisition (CPA) measures the average campaign cost for each defined conversion or acquisition.

Formula: total campaign spend ÷ acquisitions.

Example: $2,400 of spend and 60 acquisitions gives a CPA of $40.

Define one conversion event and use the same campaign period for both inputs. For customer-level sales and marketing cost, use the CAC Calculator.

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