What is the ROI Calculator?
Return on investment and annualized ROI. The ROI Calculator is a free online tool that works instantly in your browser — no installation, no signup and nothing to upload. It sits alongside other Finance tools on DevNibble such as Compound Interest Calculator, Simple Interest Calculator, Loan EMI Calculator.
How to use the ROI Calculator
- Enter your values in the fields.
- The result is calculated instantly as you type.
- Copy the output.
Features
- Runs 100% in your browser — your data is never uploaded or stored.
- Free forever, with no account, no ads and no tracking.
- Copy or download your result in one click.
- Fast and responsive on desktop, tablet and mobile.
Frequently asked questions
Is the ROI Calculator free to use?
Yes — ROI Calculator is completely free with no sign-up, no ads and no limit on how many times you can use it.
Is my data private when I use the ROI Calculator?
Everything happens locally in your browser. Your input is never sent to a server, which makes ROI Calculator safe to use with private or sensitive data.
How do I use the ROI Calculator?
Enter your figures and ROI Calculator updates the result instantly as you adjust the numbers.
How is the result calculated?
ROI Calculator applies the standard financial formula for this calculation. Results are estimates for planning and may differ slightly from your bank's or provider's exact figures.