CALCULATOR · Finance
ROI Calculator
Return on investment as a percentage and absolute gain or loss.
Show formula
ROI = (final − initial) ÷ |initial| × 100
Method reviewed:Simple return on investment: (final − initial) / |initial| × 100 · reviewed August 2026
Inputs
Result
Your result appears here
Enter Initial value / Final value and the result fills in as you type.
How it works
- Enter the initial investment.
- Enter the final value.
- Read ROI as a signed percentage plus net gain or loss.
Frequently asked questions
What if my initial value was negative?
The formula uses |initial| as the base so results stay comparable; the gain remains the raw difference.
Does ROI account for time?
No — simple ROI ignores duration. Compare investments over equal periods or use an annualized measure.
Examples
- Bought for 2,000 and sold for 2,500 — what is the ROI?
- +25%, a gain of 500.
- Is +25% a good annual return?
- It is not an annual figure at all. Simple ROI ignores how long you held the position, so +25% over one year and over ten are the same number here.
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