Compound Interest Calculator

Calculate how your investments grow over time with compound interest and regular contributions. See a year-by-year breakdown of your wealth accumulation.

How to Use the Compound Interest Calculator

  1. Enter your initial investment (principal amount).
  2. Set a monthly contribution amount (can be 0).
  3. Enter the expected annual interest rate.
  4. Choose the investment duration in years.
  5. Select how often interest compounds (daily, monthly, quarterly, or yearly).
  6. Click Calculate to see your projected growth.

Understanding Compound Interest

Compound interest is interest calculated on both the initial principal and the accumulated interest from previous periods. This creates exponential growth over time, making it one of the most powerful concepts in finance. The more frequently interest compounds, the more you earn.

Features

  • Support for daily, monthly, quarterly, and yearly compounding
  • Monthly contribution support for regular investing
  • Year-by-year breakdown table
  • Visual breakdown of contributions vs interest
  • 100% client-side for full privacy