How to use this tool
Replace the example values with your own inputs. Results update as you type. Keep your measurement period and definitions consistent, then use the result to inform the next question in your advertising review.
The formula
ROAS = attributed revenue ÷ ad spend. Contribution profit = revenue − product costs − fees − refunds − ad spend.
Worked example
3,500 revenue and 1,000 spend produces 3.50× ROAS. After 1,200 product costs, 250 fees and 175 refunds, contribution profit is 875.
What the result can tell you
Use the same date range, currency and attribution window for every input. Results are calculations, not a forecast of campaign performance. Contribution profit excludes fixed overhead and tax.
Is it free, and where do my inputs go?
The tool runs in your browser without an account or an ad-platform connection. Calculation inputs are not sent to WhatWins. If you save a scenario, it stays in this browser on this device.