Investment Calculators
ROI Calculator
Calculate return on investment as a percentage and as an annualised figure, so investments held for different periods can be compared.
Return on investment
55%
- Profit
- $5,500
- Annualised return
- 15.73%
InvestedFinal value
How this calculator works
ROI = (final value − cost) ÷ cost × 100
- annualised
- the constant yearly rate that produces the same result
Important considerations
- Ignores taxes, dealing costs and the timing of any additional contributions.
- A high ROI over a long period can be a poor annualised return.
Related calculators
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- Stock Profit CalculatorProfit, loss and break-even price on a share trade.
- Dividend CalculatorDividend income, yield and payment per period.
- Dividend Reinvestment CalculatorGrowth of a holding when dividends are reinvested.
Learn more
Terms used here
Frequently asked questions
Why annualise?
A 50% gain over one year and over ten years are very different outcomes; annualising makes them comparable.
Disclaimer
Legamoney calculators are educational tools. Results are estimates based on the figures you enter and do not constitute financial, tax or legal advice.
Last reviewed 2026-08-01