Free tool · ROAS
ROAS Calculator
ROAS — return on ad spend — is the headline efficiency metric for paid media: for every dollar in, how many came back? Enter any two of revenue, ad spend, and ROAS and this calculator solves for the third.
ROAS measures efficiency — not profit
A 4× ROAS looks like a win until you remember it counts gross revenue against media spend alone. Margin, fees, and fixed costs all sit outside the ratio.
Gross, not net
ROAS divides revenue by ad spend only — it ignores cost of goods, fulfilment, and agency fees. A 3× ROAS on a 25% margin product is losing money once the goods are paid for. Always pair ROAS with your gross margin.
Know your break-even
Break-even ROAS is 1 ÷ gross margin. At a 40% margin you need 2.5× just to cover the product; anything below that is unprofitable growth no matter how good the ratio looks next to a benchmark.
Attribution sets the number
ROAS is only as honest as the revenue you credit to the ads. Last-click inflates lower-funnel channels; broad-match and view-through credit can double-count. Hold one attribution model constant before you compare channels.
Calculate your ROAS
Enter any two of revenue, ad spend, and ROAS.
Revenue attributed to the campaign or channel.
Total media spend behind that revenue.
Return on ad spend as a ratio — 4 means $4 back per $1 spent.
Waiting for input
Enter any two of revenue, ad spend, and ROAS — the third fills in automatically.
Formula: ROAS = revenue ÷ ad spend.
What is ROAS?
ROAS — return on ad spend — is gross revenue generated by advertising divided by the amount spent on it. A ROAS of 4 means every $1 of media returned $4 in revenue.
It is the everyday efficiency dial for paid media because it reads instantly: above your break-even ROAS the channel is contributing, below it the channel is buying revenue at a loss.
Calculate ROAS
ROAS = Revenue ÷ Ad spend
Earn $40,000 from $10,000 of spend → ROAS = 40,000 ÷ 10,000 = 4.0×
Revenue needed for a target ROAS
Revenue = Target ROAS × Ad spend
3× ROAS on $10,000 spend → 3 × 10,000 = $30,000 of revenue needed
Break-even ROAS
Break-even ROAS = 1 ÷ Gross margin
50% gross margin → 1 ÷ 0.5 = 2.0× ROAS just to break even
How to use this ROAS calculator
Three fields, one ratio — fill in the two you know.
Enter the two values you have
Know revenue and spend? Get ROAS. Setting a target ROAS and a budget? See the revenue you need. Have a target and a revenue goal? See the spend it allows.
Compare against break-even
Work out 1 ÷ gross margin and treat that as your floor. A 4× ROAS is strong on a 20% margin product and barely break-even on a 25% one — the ratio means nothing without margin.
Read it next to ROI
ROAS is gross revenue over media spend; ROI nets out every cost. Use ROAS to steer day-to-day bidding and ROI to judge whether the campaign actually made money.
What is a good ROAS?
It depends entirely on your margin. The only universal floor is your break-even ROAS — 1 ÷ gross margin — and you want to clear it with room to spare. As a rough rule, e-commerce often targets 3×–4×, but a high-margin software business can be profitable well below that and a thin-margin retailer needs far more.
What is the difference between ROAS and ROI?
ROAS divides gross revenue by ad spend alone, so it ignores cost of goods, fees, and overhead. ROI divides net profit by total cost. ROAS can read 4× while ROI is negative once product margin and agency fees are counted, which is why you should never report one without the other.
How do I calculate break-even ROAS?
Break-even ROAS is 1 divided by your gross margin. A 50% margin gives a 2.0× break-even; a 25% margin gives 4.0×. Below that point each sale loses money, so set your target ROAS above break-even by whatever profit you need the channel to contribute.
Why is my ROAS high but the business still losing money?
ROAS only counts revenue against media spend. If your gross margin is thin or your fixed costs and fees are large, a healthy-looking ROAS can still leave you underwater. Convert ROAS to a profit view by comparing it to break-even ROAS and then checking ROI on all costs.
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