ROI Calculator
Enter your initial investment and final value to calculate net profit and ROI — add an investment period for annualized ROI.
How to Use ROI Calculator
- 1
Enter your initial investment and the final value it grew (or shrank) to.
- 2
Optionally enter the investment period in months for an annualized rate.
- 3
See net profit, ROI and annualized ROI instantly.
ROI Calculator Features
- Calculates return on investment as a simple percentage.
- Optionally annualizes the return so investments of different lengths can be compared fairly.
- Updates live as you type — no button to click.
Why use Tool King?
Fast
No waiting rooms or sign-ups. Most files are ready in seconds.
Private
Files are processed in memory and discarded right after — never stored or shared.
Free
Every tool is free to use, with no hidden limits on the essentials.
Frequently Asked Questions
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