Quick answer
How do you calculate ROAS?
Use ROAS = Revenue from ads ÷ Ad spend. Enter the matching values above to calculate the result instantly.
What it measures
Understanding ROAS
Return on ad spend (ROAS) compares revenue attributed to advertising with the media cost used to generate it. A 4.00× ROAS means every $1 of ad spend produced $4 in revenue. It is a fast way to compare campaigns, channels, audiences, or creative tests when attribution is measured consistently. ROAS is not the same as profit or ROI: it usually ignores product cost, agency fees, creative production, discounts, fulfillment, and overhead. A campaign can show a strong ROAS and still lose money when margins are thin. Your break-even ROAS depends on contribution margin; with a 25% contribution margin, roughly 4.00× is needed before other costs. Attribution settings also matter. Platform-reported revenue may overlap across channels or use different click and view windows, so compare like with like and reconcile against analytics or order data. Use ROAS as an operating signal rather than a complete financial verdict. Pair it with customer acquisition cost, conversion rate, incremental lift, and contribution profit to decide where additional budget truly creates value.
The math
Return on ad spend formula
Worked example
Example calculation
- Calculation
- $20,000 ÷ $5,000
- Result
- 4.00× ROAS
Step by step
How to use this calculator
- 1Enter revenue attributed to one campaign or channel.
- 2Enter ad spend for the identical period and scope.
- 3Compare the result with your margin-based break-even ROAS.
Decision support
When this calculator is useful
- Comparing ad channels
- Monitoring campaign efficiency
- Setting scaling thresholds
Common questions
Frequently asked questions
What does 3× ROAS mean?
It means the campaign generated $3 in attributed revenue for each $1 of ad spend.
What is a good ROAS?
A good ROAS exceeds the level required to cover product, fulfillment, and operating costs while meeting your profit target.
Is ROAS the same as ROI?
No. ROAS compares revenue with ad spend; ROI compares net gain with the full investment cost.
Should agency fees be included?
Basic ROAS usually uses media spend only. Include other costs for a broader marketing ROI view and label the metric clearly.
Calculation reviewed: 2026-06-18. CalcPilot uses the formula shown above and tests representative values during the production build. See our methodology and correction policy.
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