ROAS & Break-even Calculator
This free ROAS calculator works out your true advertising profit in seconds. Enter ad spend, revenue and gross margin to get ROAS, break-even ROAS, profit or loss, ROI and POAS — with a clear verdict on whether your campaign actually makes money. Built for media buyers, e-commerce sellers and agencies. Free, no sign-up, and every number is calculated in your browser.
Your results will appear here
Enter your ad spend and revenue to see ROAS, profit and break-even.
ROAS Revenue ÷ ad spend — how many times each unit of ad money comes back as revenue.
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Break-even ROAS 100 ÷ gross margin % — the minimum ROAS at which your ads stop losing money.
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Profit / Loss Revenue × margin − ad spend — what actually stays in your pocket.
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POAS Profit on Ad Spend: (revenue × margin) ÷ ad spend. Above 1 means profitable.
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ROI Profit ÷ ad spend × 100 — your return on ad investment as a percentage.
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What if your spend changes?
| Spend change | Ad spend | ROAS | Profit / Loss |
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Profit at the same revenue if ad spend shifts up or down by up to 20%.
How to use
- Pick your display currency (THB or USD — label only, no conversion).
- Enter your ad spend and the revenue it generated.
- Add your gross margin % — leave it at 100 if you have no product costs.
- Read the verdict: ROAS vs break-even, profit, ROI and POAS update instantly.
- Click "Copy summary" to paste the full result into a report or chat.
Features
- Break-even ROAS from your real gross margin (100 ÷ margin %)
- True profit and ROI — not just revenue multiples
- POAS (Profit on Ad Spend) for margin-aware optimization
- Plain-language verdict: profitable, break-even or losing money
- Sensitivity table showing profit if your spend shifts ±20%
- 100% in-browser — your numbers never leave your device