How to use the ROAS Calculator

Calculate return on ad spend and estimated gross contribution after advertising.

Calculation formula

ROAS = attributed sales revenue ÷ ad spend; estimated contribution after ads = revenue × gross margin − ad spend.

Recommended steps

1. Enter values using the units shown beside each field.
2. Review whether the example assumptions match your situation.
3. Run the calculator and compare the key metrics.
4. Use the source data or official rates when precision matters.

Known limitations

Attribution and contribution margin are user-provided assumptions. ROAS is not ROI or net profit.