Calculator Tool
CPA Calculator workspace
Calculate cost per acquisition using spend and total conversions.
CPA
20
Formula: Spend / Conversions
Formula and method
This calculator divides spend by conversions to show cost per acquisition, which helps evaluate whether campaign outcomes are financially sustainable.
Example calculation
These examples show how acquisition cost moves with conversion quality, not just with media spend levels.
Example 1
A campaign with 8,000 spend and 40 conversions has a CPA of 200, used to compare against customer value.
Example 2
Test whether reducing low-performing placements can lower CPA without reducing total conversion volume.
CPA Calculator FAQ
How do I know if my CPA is good?
Compare CPA to your customer lifetime value or average order value. Sustainable acquisition requires CPA to be lower than the revenue a new customer generates.
How is CPA different from CAC?
CPA is tied to a specific campaign action or conversion event, while CAC typically accounts for all marketing costs divided by new customers acquired.
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