When to use this calculator
Compare advertising-attributed revenue with advertising spend. ROAS is a revenue multiple, not a profit margin or proof of causation.
Explore the marketing & customer calculators for other questions in this topic. For a related calculation, use the Revenue Per Visitor Calculator: Compare attributed revenue with the number of visitors in the same period.
PUTTING IT INTO PRACTICE
Return on Ad Spend: a worked example
The values below are an illustrative example, not a recommendation. Replace them with measurements or assumptions that match your question.
| Input | Example value |
|---|---|
| Attributed revenue | 2,500 |
| Ad spend | 500 |
| Result | 5 × |
- Check the input labels and enter the example values above.
- Apply the relationship: ROAS = attributed revenue ÷ ad spend.
- The result is 5 ×, rounded for display.
How to interpret your result
ROAS is a revenue multiple, not a profit margin or proof of causation.
Define the event, audience and attribution window before calculating a rate. Clicks, customers and orders are different units. Acquisition cost and campaign CPA may cover different spending categories.
Frequently asked questions
Should I count unique users or total events?
Use the definition matching your metric. State it consistently because repeat events can produce a different rate from unique people.
How do I use the return on ad spend calculator?
Enter attributed revenue, ad spend. The result updates automatically. Use the units shown beside each input; the example values illustrate the method.
Which formula does this calculator use?
ROAS = attributed revenue ÷ ad spend.
What should I check before using the result?
ROAS is a revenue multiple, not a profit margin or proof of causation.
How are results rounded?
Scalar numbers display up to six decimal places, with scientific notation for very large or small values. Text, fraction, date and schedule outputs use the format described on the tool. Intermediate calculations use JavaScript floating-point arithmetic. Keep sensible precision for your measurements.
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