ROI Calculator

By the utils.sbs team · Reviewed November 2026 · How we build and review tools

ROI Calculator is a free browser-based finance tool. Calculate return on investment and net profit. It runs with JavaScript arithmetic locally, requires no account and does not upload your files. Open the page, add your input, adjust any options and download the result.

ROI Calculator is a free browser-based finance tool from utils.sbs. Calculate return on investment and net profit. It is built for quick, focused jobs: open the page, add your input, adjust the options and take the result with you. No account, install or server upload is required.

The calculator applies standard formulas with JavaScript number precision and shows the result immediately. Values are not sent anywhere.

1. 1Open ROI Calculator and add your input.
2. 2Adjust the options: amount invested, amount returned.
3. 3Run the tool, check the preview or result, and download the output.

• Check a calculation before making a decision.
• Work through a homework or reference problem with visible steps.
• Sanity-check a financial, health or geometry estimate.

Amount invested

Enter a numeric value.

Amount returned

Enter a numeric value.

ROI = (amount returned − amount invested) ÷ amount invested × 100.

The result is calculated from the values you enter and displayed immediately. It is a reference calculation, not financial, medical or legal advice.

Results are reference calculations. Verify financial, medical, legal or safety-critical decisions independently.

ROI Calculator processes its input in the browser whenever the platform API allows it. Files and values are not uploaded to a server for processing, and the tool does not require an account. For calculations, use the result as a reference and verify important decisions against the source formula or a qualified professional. Read our methodology.