GWN Tools · Finance

ROI Calculator

Find your return on investment, net profit, and annualized return from an initial investment and final value.

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return on investment
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Net profit
Annualized return

Estimates only — not financial advice. Verify with your lender/advisor.

How an ROI calculator works

An ROI calculator compares what you put in to what you got back: it divides your net profit by the initial investment to show the return as a percentage, and when you enter a holding period it also shows the equivalent return per year.

How is return on investment (ROI) calculated?

ROI is the net gain divided by the cost of the investment, expressed as a percentage: ROI = (final value - initial investment) / initial investment x 100. For example, growing $1,000 into $1,500 is a 50% ROI. Results are estimates, not financial advice.

What is annualized return and how does it differ from ROI?

Total ROI measures the whole gain over the entire holding period, while annualized return shows the equivalent return per year. It uses the formula annualized = ((final value / initial investment)^(1 / years) - 1) x 100, which lets you compare investments held for different lengths of time.

Can ROI be negative?

Yes. If the final value is less than the initial investment, the net profit is negative and the ROI is a negative percentage, meaning you lost money on the investment. The annualized return would also be negative.