About this ROI Calculator
ROI Calculator provides a basic percentage comparison between an initial cost and a final value.
Formula or method
ROI = (Final value − Initial cost) ÷ Initial cost × 100.
Example
An initial cost of 1000 and final value of 1200 gives ROI of 20%.
Common uses
- Compare simple gain/loss scenarios.
- Check a basic project return.
- Understand percentage change relative to cost.
How to use this tool
- Enter the values or text requested by the calculator.
- Choose units or options when the tool provides them.
- Select the calculation button and review the result.
- Use the formula, example and notes on this page to check whether the result fits your situation.
Important note
This simple ROI does not account for time, cash flows, taxes, fees or risk.
Estimate only: Money-related results are mathematical estimates. They are not financial, tax, legal, credit or lending advice.
Frequently asked questions
Does ROI include time?
No. For annualized growth across multiple years, use CAGR instead.
Can ROI be negative?
Yes. A final value below the initial cost produces a negative ROI.