About the ROAS Calculator
Return on ad spend (ROAS) from ad revenue and spend, plus profit after product margin.
Also known as: return on ad spend, roas formula, ad roi.
How to use this calculator
- Enter revenue from ads, ad spend, gross margin.
- The result updates instantly as you type — press Calculate (or Enter) at any time.
- Review the breakdown shown under the main result.
- Use Copy result or Share to save the answer or send a link with your inputs.
Formula
ROAS = ad revenue ÷ ad spend
Worked example
Using the values pre-filled in the calculator above:
- Revenue from ads = 18,000
- Ad spend = 4,500
- Gross margin = 50 %
the calculator returns:
- ROAS: 4 ×
- ROAS %: 400%
- Profit after ad spend: 4,500
- Break-even ROAS: 2 ×