Last updated on November 2nd, 2026 at 06:24 pm
Return on Ad Spend (ROAS) Calculator
By Digital Mansoor · 12+ years in SEO
Enter ad revenue and ad spend. Get your ROAS. Add your margin to see the ROAS you need just to break even.
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- Calculates ROAS from ad revenue and ad spend.
- Adds break-even ROAS (1 divided by margin) and a target ROAS for the profit you want.
- Shows profit after ad spend and a break-even ROAS table by margin.
- Free, no signup, and nothing leaves your browser.
What is the ROAS Calculator?
ROAS is ad revenue divided by ad spend. This calculator also shows whether that ROAS makes a profit, by comparing it with break-even ROAS for your margin.
It is built for small business owners and marketers who run Google, Meta or other paid campaigns.
How to use the free ROAS Calculator
- Enter ad revenue: The revenue the ads brought in.
- Enter ad spend: The cost of the ads.
- Enter gross margin: As a percent.
- Enter desired profit: As a percent of revenue.
- Read the results: Compare ROAS with break-even and target.
Example: input and output
Ads that earned 240,000 on 60,000 of spend at a 40 percent margin.
Results shown are from the live tool.
How the ROAS Calculator helps your SEO work
- See whether a good-looking ROAS actually makes a profit.
- Set a target ROAS from your margin.
- Find the most you can spend and break even.
- Compare ROAS at different margins.
- Explain ad performance to a client.
ROAS Calculator compared with other free tools
I compared this with the break-even ROAS calculator on landerlab.io, read from its page on 22 October 2026. I could not test its interactive tool.
| Check | This tool | landerlab.io |
|---|---|---|
| Inputs | Revenue, spend, margin, desired profit | Order price, cost per sale, target margin, and optional conversion rate and ad spend |
| Break-even ROAS | Yes | Yes |
| Target ROAS | Yes: for your profit goal | No separate field, per the page |
| Max CPA and CPC | No: use the CPA and CPC calculators | Yes |
| Ad budget planner (clicks and sales needed) | No | Yes, per the page |
| Margin table | Yes | Not mentioned |
| Signup | None | None, per the page |
Where they are ahead: landerlab.io works out max CPA, max CPC and a budget plan from the order price. This tool starts from actual revenue and spend and adds a target ROAS.
Compared on 22 October 2026 by opening each tool and reading its page. Features can change.
What the ROAS Calculator cannot do
- This is a formula calculator. It does not use AI, and results are only as good as the numbers you enter. Use your own account data, not guesses.
- ROAS ignores product cost, shipping and returns unless you put them into your margin.
- Break-even ROAS is 1 divided by gross margin.
- It does not account for repeat purchases. See the CLV Calculator.
- Attribution differs between ad platforms, so platform ROAS can differ from your real return.
Is my text or data sent anywhere?
Your numbers is processed in your browser and is not sent to this site or any other server. The Save button keeps snapshots in your own browser storage. The share link puts your input in the part of the URL after the # sign, which browsers do not send to servers, but anyone you give the link to can read it.
ROAS Calculator FAQ
What is ROAS?
Return on ad spend: ad revenue divided by ad spend.
What is a good ROAS?
It depends on your margin. Compare it with your break-even ROAS.
How do I calculate break-even ROAS?
Divide 1 by your gross margin. At a 40 percent margin it is 2.5x.
What is target ROAS?
The ROAS you need to reach a profit goal after ad spend.
Is ROAS the same as ROI?
No. ROAS uses revenue. ROI uses profit.
Does it use AI?
No. It uses formulas in your browser.
Is the ROAS Calculator free?
Yes, it is free and needs no signup.
Want this done for your site?
Send your URL on WhatsApp and I will tell you what to fix first.
Need more than a free tool? See my on-page SEO consulting and technical SEO consulting work.
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