ROI Calculator — Return on Investment
Calculate return on investment, net gain and annualized return.
ROI = (final − initial) ÷ initial. The annualized figure (CAGR) shows the equivalent steady yearly return, which lets you compare investments held for different lengths of time.
Results are estimates for information only, not financial advice. See how we build and verify our calculators.
Work out the return on investment from what you put in and what it became. The calculator shows the net gain, the total ROI as a percentage, and the annualized return (CAGR) so you can fairly compare investments held for different lengths of time. Useful for stocks, property, marketing campaigns and side projects. Runs in your browser.
How to use the ROI Calculator
- Enter the initial investment and the final value.
- Enter the holding period in years for an annualized figure.
- Read the net gain, total ROI and annualized return.
Frequently asked questions
What is the ROI formula?
ROI = (final value − initial investment) ÷ initial investment × 100. A result of 35% means you gained 35% on top of what you put in.
What's the difference between ROI and annualized return?
Total ROI is the whole-period gain. Annualized return (CAGR) converts it to an equivalent steady yearly rate, so a 35% return over 3 years is about 10.5% per year — the fair way to compare different holding periods.
Can ROI be negative?
Yes. If the final value is below the initial investment, ROI is negative, showing a loss.