ROAS Calculator
Is your advertising paying for itself? Enter what you spent on ads and the revenue they brought in to get the return on ad spend. Add your gross margin and the calculator also shows the break-even ROAS, the minimum the campaign must reach to cover its cost, and the profit or loss after ad spend.
- Runs in your browser
- No sign-up
- Free to use
Revenue attributed to the campaign.
For break-even ROAS and profit after ad spend.
ROAS depends on how revenue is attributed to ads. Platform-reported figures often differ from your own sales data.
How to use ROAS Calculator
- Enter the ad spend for the campaign or period.
- Enter the revenue attributed to those ads.
- Add your gross margin for break-even analysis.
- Compare the ROAS with the break-even ROAS.
ROAS Calculator features
ROAS as ratio and percentage
For example 3.5 : 1 or 350%.
Break-even ROAS
1 ÷ margin: the minimum for a campaign to pay for itself.
Profit after ads
Gross profit from the revenue minus the ad spend.
Cost of sale
Ad spend as a share of revenue.
Any currency
Amounts in your currency.
Shows the formula
With the working beneath.
When to use ROAS Calculator
- Judging Google, Meta or marketplace ad campaigns.
- Setting a target ROAS for automated bidding.
- Comparing campaigns or channels.
- Explaining ad performance to a client.
ROAS Calculator FAQ
What is ROAS?
Return on ad spend: revenue generated by ads divided by the cost of those ads. A ROAS of 4 means four units of revenue for each unit spent.
What is a good ROAS?
It depends on your margin. A business with a 25% gross margin needs a ROAS of at least 4 just to break even on the ad cost; one with a 75% margin breaks even at about 1.33.
How is ROAS different from ROI?
ROAS uses revenue; ROI uses profit. A campaign can have a high ROAS and still lose money if margins are thin.
What is break-even ROAS?
The ROAS at which gross profit from ad revenue exactly covers ad spend: 1 divided by the gross margin as a fraction.
Why do platform ROAS figures differ from mine?
Platforms attribute sales using their own rules and time windows, and may count sales that would have happened anyway. Compare with your own order data.
Does ROAS include other costs?
No. Agency fees, creative production and overheads are not part of ad spend unless you add them.
Revenue is not profit
ROAS is the headline metric of paid advertising because it is easy to measure: platforms report spend and attributed revenue, and dividing one by the other gives a number that rises when campaigns work better. Automated bidding systems even let advertisers set a target ROAS.
The trap is that ROAS measures revenue, and revenue is not what a business keeps. Each sale has its own costs: the product, shipping, payment fees. What remains, the gross margin, is what has to pay for the advertising. That is why the break-even ROAS, one divided by the margin, is the essential comparison.
A shop with a 30% margin needs a ROAS of 3.33 before an ad campaign stops losing money. Below that line, every sale the ads produce costs more in advertising than it earns in profit, however impressive the revenue looks. Above it, the surplus is real profit, before overheads.
Attribution adds uncertainty. Ads get credit for sales according to the platform’s rules, which tend to be generous. Some customers would have bought anyway. Check reported ROAS against your own sales data, and consider incremental tests that compare results with and without advertising.