Finance

Compound Interest Calculator

Estimate how an investment can grow with compound interest, monthly contributions, rate and time period.

Quick answer

This calculator estimates the final balance of an investment when returns are reinvested over time. It shows total invested, accumulated interest and final amount.

How to use it

  1. Enter the initial amount.
  2. Add a monthly contribution if applicable.
  3. Enter the interest rate and period.
  4. Choose the term and calculate.

Formula used

FV = P x (1 + r)^n

Monthly contributions are compounded for the remaining months in the selected period.

Important note

This is an educational estimate and is not investment advice. Real returns may vary due to taxes, fees, inflation and risk.