ROI Calculator
ROI is the simplest way to measure whether an investment paid off, expressed as a percentage of what you put in. Enter your initial investment and final value to see your total return — and, optionally, the annualized rate if you held it for more than a year.
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How It Works
ROI = (Final Value − Initial Investment) ÷ Initial Investment × 100. This gives your total return over the whole holding period, regardless of how long that was. If you enter a holding period, the calculator also shows annualized ROI — the equivalent steady yearly rate that would produce the same result — which makes it possible to fairly compare investments held for different lengths of time.
Worked Example
Turning a $10,000 investment into $14,500 over 3 years is a 45% total ROI — but annualized, that works out to roughly 13.2% per year, which is the figure you'd actually want to compare against a savings account rate, a bond yield, or another investment's annual return. A second investment that also returned 45% but over just 1 year would show the same total ROI yet a dramatically higher annualized rate (45% vs. 13.2%) — a reminder that total ROI alone can make very different investments look deceptively similar.