How to Use ROI Calculator
Enter amount invested, amount returned and holding period to get ROI, net gain and annualized return.
Open the ROI Calculator tool →What is ROI Calculator?
Calculate return on investment, net gain and annualized ROI. It's completely free, needs no sign-up, and runs entirely in your browser — so it's fast and private.
How to use ROI Calculator
- Open the ROI Calculator tool.
- Enter your details or values.
- The result is calculated instantly.
- Copy or use the result. Everything runs in your browser — nothing is uploaded.
Frequently asked questions
What does ROI measure?
Return on investment — your net gain expressed as a percentage of what you invested.
What is annualised ROI?
It expresses your return as a yearly rate, so you can fairly compare investments held for different lengths of time.
Is my data uploaded?
No — it's calculated locally in your browser.
Ready to try it?
Open ROI Calculator →