Money & Finance · Free tool
ROI Calculator
Calculate return on investment (ROI) as a percentage or dollar amount. Enter cost, return, and time period — done.
Updated April 2026
ROI
50.00%
Net gain: $500
Annualized return
50.00%
What it does
A free ROI (return on investment) calculator. Enter what you put in and what you got back — see your percentage return plus annualized rate over the holding period.
ROI is useful for comparing investments, marketing campaigns, and business decisions on the same scale. Annualized ROI matters more than absolute: a 50% return in 5 years is 8.4% annualized — less exciting than it sounds. Pair with our investing guide.
How to use it
- Enter the cost (amount invested).
- Enter the return (final value).
- Enter the time period in years.
- Read simple ROI and annualized ROI.