ROI Calculator
Measure return on investment and annualize it.
How to use
- 1 Enter the initial amount you invested.
- 2 Enter the final value of the investment.
- 3 Read off the ROI percent and the profit or loss.
- 4 Tick "annualize" and enter the years held to see the yearly return.
About ROI Calculator
The ROI Calculator measures how much an investment gained or lost relative to what you put in.
Enter the initial amount invested and the final value, and it returns the return on investment as a percent along with the absolute profit or loss.
Turn on annualization and add a holding period, and it also gives the equivalent compound annual return, so you can compare investments held for different lengths of time on a level footing.
Return on investment is the most widely used yardstick for performance because it is simple and comparable: ROI% = (final − initial) / initial × 100.
But a raw ROI can mislead when periods differ — a 50% gain over five years is far weaker than a 50% gain over one.
The annualized figure fixes that by expressing the result as the steady yearly rate that would have produced the same outcome, which is the right number for comparing a quick flip against a long hold.
A loss is reported as a negative percent and a negative profit, so the sign tells you immediately whether you are ahead or behind.
The calculator runs entirely in your browser and keeps your figures on your own device.
FAQ
What counts as the initial and final value?
Initial is the total you put in; final is what the position is worth now (or what you sold it for). The difference, divided by the initial amount, is your ROI.
Why annualize the return?
Annualizing converts a total return into an equivalent yearly rate, so you can fairly compare investments held for different lengths of time.