Marketing ROI Calculator
Calculate the return on a marketing campaign or ad spend. Enter the total spend and the attributed revenue to see ROI as a percentage, net profit, and return multiplier (sometimes called ROAS). All calculations run locally in your browser.
Calculation mode
Currency
Formula: Marketing ROI % = ((revenue - ad spend) / ad spend) x 100
Calculations are estimates for informational purposes only. Consult a financial professional for advice.
How it works
Simple ROI uses the formula ROI % = ((gain - cost) / cost) x 100. Annualized ROI uses ((gain / cost)^(1 / years) - 1) x 100, which expresses total return as an equivalent constant per-year rate. Marketing ROI applies the same simple-ROI arithmetic to ad spend and attributed revenue, with the additional ROAS multiplier shown alongside the percentage.
Processing runs in your browser
Every calculation runs locally in your browser as JavaScript. Cost, gain, and revenue figures stay on your device.
Calculations are estimates for informational purposes only. Consult a financial professional for advice.
Frequently asked questions
- What is the marketing ROI formula?
- Marketing ROI % = ((revenue - ad spend) / ad spend) x 100. For example, 5,000 spent on ads that generated 20,000 in attributed revenue gives a net of 15,000 and a marketing ROI of 300%. The return multiplier (ROAS) is 4x.
- What is the difference between ROI and ROAS?
- Return on ad spend (ROAS) is revenue divided by ad spend, expressed as a multiplier. ROI subtracts the spend first and expresses the net as a percentage of spend. A ROAS of 4x corresponds to an ROI of 300%.
- Should I include other costs besides ad spend?
- For a true profit ROI, include all campaign-related costs in the spend field: ad budget, creative production, agency fees, and any platform tooling. If you only include ad spend, the result is technically a media ROI.
- Is my campaign data sent to a server?
- All calculations are pure JavaScript running in your browser. Spend and revenue figures stay on your device.
Last reviewed May 26, 2026