Free Tool by SearchVector
CPA Calculator
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Enter ad spend and conversions to get cost per acquisition, with conversion rate, CPC, CPM, CTR, ROAS and whether each conversion is profitable.
Know what each customer costs
Cost per acquisition is ad spend divided by conversions. On its own it says little; compared with what a conversion is worth, it tells you whether a campaign makes money. This calculator shows CPA beside the metrics that explain it and checks it against your break-even point and target.
Use profit per conversion rather than revenue when you want CPA to reflect margin.
Spend ÷ conversions.
CTR, CPC, conversion rate and CPM.
Profitable or losing per conversion.
Conversions or spend needed to hit it.
About the cpa calculator
CPA
Included
Spend ÷ conversions.
Funnel metrics
Included
CTR, CPC, conversion rate and CPM.
Break-even
Included
Profitable or losing per conversion.
Target CPA
Included
Conversions or spend needed to hit it.
How it works
Use the cpa calculator in three steps
Enter spend and conversions, add clicks and value, compare to target.
01
Enter spend and conversions
From your ad platform.
02
Add clicks and value
For the full picture.
03
Compare to target
See what has to change.
CPA maths for paid campaigns
Every number you need for the next decision.
Cost metrics
CPA, CPC and CPM.
ROAS
Value returned per unit of spend.
Profit check
CPA vs value per conversion.
Target planner
Conversions needed at current spend.
CPA Calculator FAQs
Common questions about the cpa calculator.