Google Ads ROI Calculator
Calculate the ROI of your Google Ads. Enter revenue and ad spend to see profit, ROI percentage, and ROAS.
Free · No signup · Updated June 2026
Your numbers
Results
Estimates for planning only. Your real results depend on audience, creative, and market conditions.
What it measures
Google Ads ROI (return on investment) is the percentage profit you earn relative to ad spend, after subtracting that spend from revenue.
Formula
ROI = (Revenue − Ad spend) ÷ Ad spend × 100
Worked example
Earning $10,000 from $2,500 in ad spend yields $7,500 profit, a 300% ROI, and a 4× ROAS.
Typical benchmarks
- Common ROI target
- 200% (2:1)
- Break-even ROI
- 0%
- Avg. return per $1 spent
- ~$2
How this calculator works
ROI = (revenue − ad spend) ÷ ad spend × 100. For a fuller picture, include product costs and overhead in your spend figure to measure true profitability.
Frequently asked questions
What's a good ROI for Google Ads? +
A common benchmark is a 200% ROI (2:1 profit to cost), but the right target depends on your margins and customer lifetime value.
Should I include product costs? +
For true profitability, yes. This calculator measures ad-level ROI; subtract COGS and overhead for net business ROI.
What is a realistic ROI for Google Ads? +
Google reports businesses make an average of about $2 for every $1 spent (200% ROI), but strong accounts with good margins and tracking exceed that.
Why is my ROAS positive but ROI negative? +
ROAS only compares revenue to ad spend; once you add COGS and overhead, a campaign with a 'good' ROAS can still post a negative ROI.
How long until Google Ads becomes profitable? +
Most accounts need 3-6 months of optimization, conversion data, and budget to reach reliable profitability as Smart Bidding learns and you cut waste.
Need a custom Google Ads tool, not a generic calculator?
This free google ads roi 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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