Google Ads ROAS Calculator
Calculate your Google Ads ROAS (return on ad spend). Enter revenue and ad spend to see how much revenue each dollar of spend produces.
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 ROAS (return on ad spend) is the revenue generated for every dollar of ad spend, expressed as a ratio of revenue to spend.
Formula
ROAS = Revenue ÷ Ad spend
Worked example
$10,000 in revenue on $2,500 of ad spend is a 4× ROAS, or 400%.
Typical benchmarks
- Common e-commerce target
- 4:1 (400%)
- Break-even ROAS
- 1 ÷ margin
- Break-even at 25% margin
- 4×
How this calculator works
ROAS = revenue ÷ ad spend. A 4× ROAS means $4 of revenue per $1 spent. Your break-even ROAS equals 1 ÷ your profit margin, so know your margins before setting targets.
Frequently asked questions
What is a good ROAS? +
4:1 is a frequently cited e-commerce target, but anything above your break-even ROAS (1 ÷ margin) is profitable.
ROAS vs ROI — which should I use? +
ROAS is a quick revenue efficiency ratio; ROI factors in cost and profit. Use ROAS for campaign optimization and ROI for business decisions.
Is a 4x ROAS good? +
It's a widely cited e-commerce benchmark, but 'good' is anything above your break-even ROAS (1 ÷ profit margin). High-margin businesses can profit at 2×, thin-margin ones may need 5×+.
What is Target ROAS bidding? +
Target ROAS is a Smart Bidding strategy where you set a desired return and Google automatically adjusts bids to hit that revenue-per-dollar goal.
Why did my ROAS drop after scaling? +
Increasing budget often expands into lower-intent audiences and pricier auctions, which can dilute ROAS. Scale gradually and watch incremental return.
Need a custom Google Ads tool, not a generic calculator?
This free google ads roas 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.
Related Google Ads calculators
Google Ads Cost Calculator
Estimate total spend from clicks, CPC, and campaign duration.
OpenGoogle Ads Budget Calculator
Determine the daily and monthly budget for your click goal.
OpenGoogle Ads CPC Calculator
Calculate cost per click from total spend and clicks.
OpenGoogle Ads Revenue Calculator
Project revenue from clicks, conversion rate, and order value.
Open