Calculators · Free to use
ROI Calculator
Quantify whether a spend paid off. Enter what you put in and what you got back to see ROI %, net gain and the return ratio.
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How to use the roi calculator
- 1Enter the total amount invested.
- 2Enter the total amount returned (revenue or value gained).
- 3See ROI %, net profit and the return multiple.
This tool runs in your browser. The text, files and values you enter are not uploaded to our server.
About the roi calculator
An ROI (return on investment) calculator measures whether a spend paid off: ROI % = (return − investment) ÷ investment × 100. It is the fastest way to compare a marketing channel, a hire, a tool subscription or a campaign on equal footing. This calculator also shows net profit and the return multiple so you can talk in both "%" and "x" terms.
Frequently asked questions
Is this tool free?
Yes — completely free, no signup, no watermark and no limits. Startup OG funds the site through its directory and partner program, not paywalled tools.
How is ROI calculated?
ROI = (amount returned − amount invested) ÷ amount invested × 100, expressed as a percentage. A result of 100% means you doubled your money; 0% means you broke even.
What is a good ROI?
Any positive ROI beats losing money, but for marketing spend many founders target 3x+ (200%+) to cover overhead and risk. Compare against your alternative use of the cash.
What is the difference between ROI and ROAS?
ROAS (return on ad spend) uses gross revenue; ROI uses net profit after costs. ROAS looks better but ROI is the honest number for decisions.