About this tool
Compute total ROI as a percentage and the equivalent annualized (geometric mean) return for a holding period.
Formula
ROI = (Final − Initial) / Initial × 100. Annualized = (Final/Initial)^(1/years) − 1.
Worked example
$10,000 → $14,500 over 3 years. ROI = 45%. Annualized ≈ 13.18%.
Notes
Annualized return lets you compare investments held for different periods. A 45% return over 3 years is worse than 45% over 1 year.