ROI formula
Subtract the investment cost from the final value to get net gain or loss. Divide that amount by the original cost and multiply by 100.
ExampleAn investment of 1,000 that becomes 1,300 has a 300 gain and a 30% ROI.
ROI Calculator
Measure the gain or loss on an investment relative to what it cost.
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If I investand the final value iswhat is my ROI?
ROI = net gain ÷ investment cost × 100. This is a simple total return and does not account for time.
Return on investment—
Net gain / loss—
Investment multiple—
Original investment—
Final value—
ROI does not measure time
A 30% return over one year and a 30% return over five years have the same simple ROI but very different annualized performance. Use CAGR when time matters.
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Common questions
Can ROI be negative?
Yes. If the final value is below the investment cost, the result is a negative percentage.
Does ROI include cash flows or dividends?
Only if you include them in the final value you enter. This calculator compares two values directly.