ROI calculator
ROI is gain over cost. Annualising it makes holdings of different lengths comparable.
Return on investment
35.000%
- Gain
- 3500.00
- Annualised return
- 10.5209 %
Show the working
- Amount invested = 10 000
- Value now = 13 500
- Years held = 3
- Gain = 13 500 - 10 000 = 3500
- Return on investment = 3500 / 10 000 * 100 = 35
- Annualised return = ((13 500/10 000)^(1/3) - 1) * 100 = 10.5209
Values are shown to six significant figures here; the arithmetic itself runs on exact fractions and is only rounded where a number is printed.
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The formula
- ROI = (value - cost) / cost
- annualised = (value/cost)^(1/years) - 1
This is arithmetic, not financial advice. Real products carry fees, tax treatment and terms that no formula captures.