Business finance

ROI Calculator

Measure gain or loss as a percentage of the invested amount.

Enter your numbers

Adjust the example to calculate using your own figures. Results update instantly.

Your results

Calculated locally

Net gain or loss: —
Return on investment: —

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Worked example

A $10,000 investment worth $13,000 produces $3,000 gain and 30% ROI.

Important assumptions

Taxes, financing, risk and timing are not included unless accounted for in your values.

How to use your results

ROI compares an outcome with the capital used to generate it. The time taken to produce that return is not reflected in the percentage.

Start with the example values, then replace them with amounts for the same transaction or time period. Double-check rates and units. The results are estimates intended to help you explore possible outcomes, not financial or tax advice.

Distinguish ROI from annualized performance

An investment returning 30% in one year and another returning 30% in five years have the same simple ROI but very different annualized rates. For multi-year comparisons, use the CAGR Calculator if there are no interim cash flows.

Include the full investment and proceeds

To measure an investment accurately, include transaction costs in the starting amount and any proceeds from selling or liquidating the asset in the ending value. An apparently attractive ROI can shrink after fees and taxes.

Does a positive ROI mean an investment was low risk?

No. ROI describes an outcome, not the probability of reaching it or the volatility along the way. It also ignores timing, financing and opportunity costs.

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How to calculate roi

ROI = (value returned − original investment) ÷ original investment × 100