ROAS Calculator
Calculate return on ad spend from attributed revenue and advertising cost.
Set your values
Adjust the values, then calculate your result.
How to use ROAS Calculator
- Enter the measurements or amounts in the fields above.
- Check that dimensions, rates and units match the labels.
- Select “Calculate ROAS” to see a clear estimate and the formula used.
How the roas calculator works
ROAS = attributed revenue ÷ advertising spend. Revenue-to-spend percentage is ROAS × 100.
Check your measurements and assumptions
ROAS is a revenue ratio, not profit. It excludes product cost, refunds, taxes, agency fees and attribution uncertainty.
Review the estimate before you act
Compare this result with an independent measurement, supplier quote or institution guidance when the decision matters. Confirm that the units and assumptions match the labels above, and update the inputs when the conditions change. Keep a note of the values used so you can reproduce the estimate later. This calculator is a planning aid and does not replace professional, product-specific or local guidance.
How do I calculate ROAS?
Divide revenue attributed to ads by the ad spend; a result of 4 means four units of revenue per unit spent.
Is input uploaded?
Processing takes place in your browser. This tool does not send your input or selected files to a conversion API.