ROI Calculator

Calculate ROI and compound annual growth rate from starting value, ending value, and time.

ROI Calculator helps you calculate return on investment and annualized return. Enter amount invested, ending value, and years held, review the breakdown, and use the guidance below to understand what the number means — and what it does not. What the ROI calculator does ROI Calculator is built for money decisions — loans, savings, payments, and taxes. Calculate return on investment and annualized return. You enter amount invested, ending value, and years held, then Simple Calculators computes the result instantly. Rates, fees, and tax rules vary by lender and country, so treat results as planning numbers, not a contract. How the math works ROI = (ending − beginning) / beginning. CAGR = (ending/beginning)^(1/years) − 1. The formula: ROI = (ending − start) ÷ start. CAGR = (ending ÷ start)^(1 ÷ years) − 1 spreads that result into a steady yearly rate.