Finance Tools

Compound Interest Calculator

Calculate compound interest on savings or investments based on principal, annual rate, time, and compounding frequency.

Calculate compound interest on an investment or savings based on principal, annual rate, time, and compounding frequency.

How to use this compound interest calculator

  1. Enter the starting principal amount (initial balance).
  2. Enter the annual interest rate as a percentage (for example, 5 for 5%).
  3. Enter the time period in years.
  4. Choose how often the interest is compounded (annually, monthly, daily, etc.).
  5. Click Calculate to see the future value and total interest earned.

Example

For a $10,000 investment at 5% annual interest compounded monthly over 10 years, this calculator shows:

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