Google Ads Target CPA Calculator
Find a profitable Target CPA for Smart Bidding. Enter your average order value and profit margin to see your break-even and suggested target CPA.
Free · No signup · Updated June 2026
Your numbers
Results
70% of break-even, leaving profit
Estimates for planning only. Your real results depend on audience, creative, and market conditions.
What it measures
Google Ads Target CPA is the cost-per-acquisition goal you set for Smart Bidding, ideally below the profit each conversion generates.
Formula
Profit per conversion = AOV × Margin · Suggested Target CPA = Profit × 0.7
Worked example
At a $120 average order value and 40% margin, profit per conversion is $48, so break-even CPA is $48 and a suggested Target CPA is $33.60.
Typical benchmarks
- Target as % of break-even
- 60-80%
- Break-even
- CPA = profit/conv
- Conversions for Smart Bidding
- 15-30 / 30 days
How this calculator works
Profit per conversion = order value × margin. Your break-even CPA equals that profit — spend more and you lose money. A suggested Target CPA of about 70% of break-even keeps roughly 30% margin after ad cost.
Frequently asked questions
What should my Target CPA be? +
Below your profit per conversion. Set it at a level that leaves the margin you want after advertising — often 60–80% of break-even.
Do I need conversion history for Target CPA? +
Smart Bidding works best with around 15–30 conversions in the last 30 days so the algorithm has enough data to optimize.
What happens if I set Target CPA too low? +
Google restricts your ads to only the cheapest conversions, which sharply limits volume and can stall the campaign. Raise it gradually toward break-even.
Can I use Target CPA without conversion tracking? +
No. Target CPA requires conversion tracking and enough conversion history for the algorithm to predict and bid toward your cost goal.
Is Target CPA the same as Maximize Conversions? +
No. Maximize Conversions spends your full budget for the most conversions, while Target CPA bids toward a specific average cost per conversion.
Need a custom Google Ads tool, not a generic calculator?
This free google ads target cpa calculator gets you a number. If you want it wired to your live ad data, GlitchFi builds custom marketing calculators, dashboards, and internal tools, plus full MVPs, with a forward-deployed engineer on your team. Fixed price, 30 days, and you pay nothing if we're late. You own all the code.
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