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Compound Interest Calculator

Calculate compound interest on a principal amount with a configurable compounding frequency (annual, half-yearly, quarterly, or monthly), showing how more frequent compounding grows the final amount.

How to Use Compound Interest Calculator
  1. 1Enter the principal amount
  2. 2Enter the annual interest rate
  3. 3Enter the number of years
  4. 4Enter the compounding frequency per year and click Calculate to see the final amount and interest
Frequently Asked Questions

It's how many times per year interest is calculated and added to the principal — for example, entering 1 compounds annually, 4 compounds quarterly, and 12 compounds monthly. More frequent compounding produces a slightly higher final amount for the same nominal rate.

This is a general-purpose compound interest calculator with a flexible compounding frequency you choose. The FD and RD calculators are tailored to those specific bank deposit products with their typical compounding conventions already applied.

Interest calculated more often starts earning its own interest sooner, so the same stated annual rate compounded monthly yields more than the same rate compounded annually.

The final amount after compounding and the total interest earned over the period.

The math is the same, but this calculator frames the growth as interest earned on an investment/deposit rather than interest owed on a loan.

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