ROI Calculator

Measure return on investment, net profit and annualized return.

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ROI and annualized return

Return on investment expresses your profit as a percentage of what you put in: ROI = (Gain − Cost) / Cost × 100. A simple ROI ignores time, so a 40% return over one year is very different from 40% over ten. The annualized return restates the gain as an equivalent compound yearly rate, making investments of different lengths comparable.