Revenue attributed to advertising divided by advertising spend, usually shown as a multiple or percentage.
A practical example
Attributed revenue of 8,000 from 2,000 in advertising spend is 4× ROAS, or 400%.
What to watch for
ROAS uses revenue, not profit. Product costs, refunds, fees and attribution assumptions determine whether that return supports the business.
Related reading
Explore Return on Investment (ROI) and Cost Per Acquisition (CPA). Try our break-even ROAS calculator for a practical next step. See how this fits into Paid advertising.