ROI Calculator

ROI Calculator — Calculate Return on Investment Online

Find out how well an investment or project performed. Enter what you put in, what you got back, and how long it took, and see your return as a percentage, your net profit, your annualised return, and your return multiple.

How to Calculate ROI

Fill in the amount invested, the amount returned, and the holding period in years, then choose a currency. Return on investment is the profit divided by the amount invested, shown as a percentage: a positive result is shown in green and a loss in red. The calculator also shows your net profit, the return multiple (amount returned divided by amount invested), and the annualised return. It opens with an example of 10,000 invested and 13,500 returned over 2 years, which works out to +35.0% ROI, a net profit of 3,500, a multiple of 1.35×, and an annualised return of 16.2%.

Why the Annualised Return Matters

A headline ROI doesn't say how long it took. A 50% return over 2 years is about 22.5% a year, while the same 50% over 5 years is only about 8.4% a year. The annualised figure is the compound annual growth rate (CAGR): the steady yearly rate that would turn your starting amount into the final amount over the period. That makes it the fairer way to compare investments held for different lengths of time. Losses work the same way — turning 8,000 into 6,500 over 3 years is an ROI of −18.8%, or about −6.7% a year.

Keep the limits in mind. The calculation doesn't include taxes, fees, inflation, or any money added or withdrawn along the way, so it suits a single amount in and a single amount out. The annualised return only appears when the holding period is above zero and the amount returned is positive. This is a calculation tool, not investment advice.

Good Uses for This Tool

Comparing the results of different investments, judging whether a marketing campaign or a business project paid off, working out the return on a property, equipment, or a course, and checking a pitch that promises a return.

Is It Actually Private?

Yes. The figures are calculated in your browser — they are never sent to a server or stored.