Calculate marketing ROI (return on investment) from the revenue and the cost.

The ROI Calculator works out your marketing return on investment (ROI) from the revenue you generated and the cost you incurred. Unlike ROAS, ROI is based on profit, so it reflects the true bottom-line return of a campaign or channel and helps you decide where to reinvest.
ROI (return on investment) is (revenue − cost) ÷ cost × 100%. It shows the profit earned relative to what you spent.
A negative ROI means the campaign cost more than the revenue it produced — you lost money on the investment.