Compound Interest Calculator - See Your Money Grow
See how compound interest grows your investment over time
Calculators
Calculator
How to Use
1Enter your initial investment
2Enter the annual interest rate
3Enter the time period in years
4Select the compounding frequency
5Click Calculate to see growth over time
Frequently Asked Questions
Compound interest is interest calculated on both the initial principal and the accumulated interest from previous periods. It makes your money grow exponentially.
More frequent compounding (daily vs annually) yields slightly higher returns because interest starts earning interest sooner.
Divide 72 by the interest rate to estimate how many years it takes to double your money. At 8%, it takes about 9 years.