with Faisal TusherCalculator
CPA Calculator
CPA is the product of three simpler numbers. Change the sliders to see which one moves CPA the most.
CPA = Spend ÷ Conversions = CPM ÷ (1,000 × CTR × CVR)
How the CPA Calculator works
Calculate cost per acquisition and decompose it into CPM, CTR and conversion rate to find which lever to pull.
You enter
- › CPM
- › CTR
- › Conversion rate
- › Budget
You get
- › CPA
- › Expected conversions
- › Implied CPC
Worked example (default values): CPM $5 · CTR 1.5% · Conversion rate 3% · Budget $10,000 → CPA $11 · Expected conversions 900 · Implied CPC $0.33.
Tips
- › If CPA doubled, check which of CPM, CTR and CVR changed before acting.
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