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CPA Calculator for performance marketers
Your acquisition economics are only as reliable as your CPA signal. Calculate CPA with conversion and budget scenarios, no spreadsheet cleanup.
Total campaign spend in your currency
Total attributed acquisitions/conversions
Projected conversions at target efficiency
Required CPA to stay inside budget
Your Results
CPA pressure-tested — now choose the campaigns to scale.
Duct turns CPA, conversion, and spend trends into a weekly brief so teams can catch profitability drift before it compounds.
What this means
CPA tells you acquisition cost. It doesn't tell you which channels are improving margin.
That requires joining CPA with click quality, close rates, and downstream revenue by campaign. Duct does that every week, so performance teams can decide faster where to cut and where to scale.
See how Duct works →