Compound interest calculator

Watch interest earn interest. Add a starting amount, a rate and a time, with optional monthly deposits.

How to calculate compound interest

  1. 01Enter your starting amount, yearly rate and number of years.
  2. 02Choose how often interest compounds and any monthly deposit.
  3. 03Read the future value, total contributed and interest earned.

FAQ

A = P × (1 + r/n)^(n×t). For example 10,000 at 5% compounded yearly for 10 years grows to 16,288.95.