ROI Calculator
Calculate net return and return on investment (ROI) percentage.
- Net return
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- Amount invested
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- Amount returned
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What is ROI?
Return on investment (ROI) measures how much you gained relative to what you put in. It is the single most common way to compare the profitability of different investments or projects on a like-for-like basis.
The formula
Net return = Amount returned − Amount invested. ROI = Net return ÷ Amount invested
× 100. A positive ROI means a gain; a negative ROI means a loss. This is a simple ROI and does not
account for how long the money was invested.
How to use the ROI Calculator
- Enter the amount invested. Type the total you originally put into the investment.
- Enter the amount returned. Type the total amount you received back.
- Read your result. See your net return and ROI percentage update instantly.
Frequently asked questions
Does ROI consider the time period?
No. This is a simple ROI. Two investments with the same ROI can differ greatly if one took a year and the other took five, so also consider the holding period.
Can ROI be negative?
Yes. If the amount returned is less than the amount invested, the net return and ROI are both negative, indicating a loss.
What is a good ROI?
It depends on the risk and alternatives. There is no universal number, but a higher ROI for the same risk and time frame is generally better.
Does this calculator store my figures?
No. The calculation runs entirely in your browser; nothing you enter is sent to or stored on a server.