Free ROAS Calculator
A campaign can post an impressive ROAS and still lose money once the cost of goods is accounted for. This calculator gives you both the raw ROAS figure and the break-even ROAS your margin requires, so you can tell a genuinely profitable campaign from one that only looks good on the surface.
Results
- Cost of goods55.0%
- Ad spend25.0%
- Net profit20.0%
Comfortably profitable. There is room to scale spend.
What the ROAS Calculator does
ROAS (Return on Ad Spend) is the revenue directly attributable to an ad campaign divided by the amount spent on that campaign, usually expressed as a ratio like 4:1 or a multiple like 4x. It measures revenue generated per dollar of ad spend — it is not a profit metric, because it takes no account of the cost of the goods or services sold.
Methodology and formula
ROAS = Revenue from ads / Ad spend. Break-even ROAS = 1 / Gross margin (as a decimal). A campaign is only profitable once actual ROAS exceeds break-even ROAS.
Worked example
- Inputs
- Ad revenue $12,000; ad spend $3,000; gross margin 35%.
- Result
- ROAS = 4.0x; break-even ROAS = 2.86x.
A 4x ROAS sounds strong, and it clears the 2.86x break-even threshold this 35% margin requires, so the campaign is genuinely profitable — but only by a moderate amount. If the margin had been 20% instead, break-even ROAS would rise to 5x, meaning the same 4x result would actually represent a loss once cost of goods is factored in.
When to use this tool
Use this tool once a campaign has run and you have actual ad revenue and spend, to check profitability against your margin-based break-even threshold rather than judging ROAS in isolation. Use the Net Profit Margin Calculator to see how ad spend feeds into overall business profitability, and the ROI Calculator when you need to net out ad spend against total returns rather than revenue alone.
About the ROAS Calculator
ROAS is a revenue ratio, not a profit ratio
ROAS only measures revenue per dollar of ad spend; it says nothing about the cost of the product, fulfilment, payment processing or overhead sitting behind that revenue. A 10x ROAS on a product with a 5% margin can be far less profitable in dollar terms than a 3x ROAS on a product with a 60% margin. Always pair a ROAS figure with the margin of the product being advertised before judging performance.
Why break-even ROAS matters more than the raw number
Break-even ROAS (1 divided by gross margin as a decimal) is the ROAS at which a campaign generates zero profit — every dollar of ad-driven revenue exactly covers both the ad cost and the cost of goods. A low-margin business with 20% margin needs a 5x ROAS just to break even, while a 60%-margin software business breaks even at a 1.67x ROAS. The same raw ROAS number means very different things depending on margin.
ROAS vs ROI — two different denominators
ROAS divides revenue by ad spend. ROI (Return on Investment) divides net profit — revenue minus all costs, including ad spend — by the total investment. ROAS will always be a bigger, more flattering number than ROI for the same campaign because it ignores cost of goods entirely. Report ROAS for channel-level optimisation and ROI when the audience is judging overall business profitability.
Attribution windows change what counts as 'ad revenue'
The revenue figure that goes into ROAS depends entirely on the attribution window and model the ad platform uses — a 7-day click / 1-day view window on Meta will report different revenue than a 30-day click window on Google Ads for the exact same campaign. Compare ROAS figures only within the same platform and attribution settings, and treat cross-platform ROAS comparisons with caution unless the windows match.
Frequently asked questions
What is a good ROAS?
How is break-even ROAS calculated?
Why is my ROAS different across ad platforms for the same campaign?
Is ROAS the same as ROI?
Should I optimise a campaign purely for the highest ROAS?
Does this calculator account for returns or refunds?
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