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Measure return on ad spend: revenue generated per advertising dollar, with margin-aware break-even.
Measure return on ad spend: revenue generated per advertising dollar, with margin-aware break-even.
Enter values above and click Calculate — results will appear here with the formula explained.
ROAS expresses advertising yield as a multiple: $42,000 of revenue from $12,000 of spend is 3.5×. It's the fastest health metric for paid channels and the first thing performance marketers optimize — one number that answers whether the machine prints money.
Its blind spot is margin. A 3× ROAS sounds strong until you learn products carry 25% margins, where break-even sits at 4×. Enter your margin above to translate ROAS from vanity to viability — the break-even threshold is simply 100 divided by the margin percent.
How to calculate ROAS step by step: take revenue directly attributable to the ads over a fixed window, divide by total ad cost in the same window (media plus creative, agency and tooling fees — not just platform spend), and express as a multiple. $50,000 revenue on $10,000 all-in spend is 5×. Changing any input's window or cost scope changes the answer, so document the definition alongside the number.
Benchmarks without margin are meaningless, but margin-adjusted rules help: e-commerce at 30–40% margins typically needs 2.5–3.3× to break even and targets 4×+; high-margin businesses profit from ~1.25× up yet chase 5×+ for growth efficiency; lead-gen businesses must convert ROAS thinking into cost-per-qualified-lead versus lifetime value. Always compare your ROAS against your own break-even, never a blog benchmark.
Attribution is where ROAS dies in practice: last-click undervalues prospecting, platform self-reporting overclaims 20–40% versus modeled or geo-holdout truth, view-through windows inflate display and video, and privacy thresholds censor small campaigns. Triangulate platform ROAS with blended MER (total revenue ÷ total spend) and periodic geo lift tests — when the three disagree, trust the lift test.
Measure return on ad spend: revenue generated per advertising dollar, with margin-aware break-even. Formula: ROAS = Attributed revenue ÷ Ad spend. Example: $12,000 spent returning $42,000 is 3.5× ROAS.
ROAS expresses advertising yield as a multiple: $42,000 of revenue from $12,000 of spend is 3.5×. It's the fastest health metric for paid channels and the first thing performance marketers optimize — one number that answers whether the machine prints money.
Its blind spot is margin. A 3× ROAS sounds strong until you learn products carry 25% margins, where break-even sits at 4×. Enter your margin above to translate ROAS from vanity to viability — the break-even threshold is simply 100 divided by the margin percent.
How to calculate ROAS step by step: take revenue directly attributable to the ads over a fixed window, divide by total ad cost in the same window (media plus creative, agency and tooling fees — not just platform spend), and express as a multiple. $50,000 revenue on $10,000 all-in spend is 5×. Changing any input's window or cost scope changes the answer, so document the definition alongside the number.
Benchmarks without margin are meaningless, but margin-adjusted rules help: e-commerce at 30–40% margins typically needs 2.5–3.3× to break even and targets 4×+; high-margin businesses profit from ~1.25× up yet chase 5×+ for growth efficiency; lead-gen businesses must convert ROAS thinking into cost-per-qualified-lead versus lifetime value. Always compare your ROAS against your own break-even, never a blog benchmark.
Attribution is where ROAS dies in practice: last-click undervalues prospecting, platform self-reporting overclaims 20–40% versus modeled or geo-holdout truth, view-through windows inflate display and video, and privacy thresholds censor small campaigns. Triangulate platform ROAS with blended MER (total revenue ÷ total spend) and periodic geo lift tests — when the three disagree, trust the lift test.
$12,000 spent returning $42,000 is 3.5× ROAS. At a 55% gross margin, break-even is 1.82× — so this campaign nets roughly $11,100 after ad costs. The same 3.5× at a 25% margin would need 4× to break even and would be losing money — identical ROAS, opposite verdict.
Formulas are standard public references (see our methodology). External standards are cited in the text where they apply.
Last reviewed: September 2026 · Report an error