Compound Interest Calculator
Calculate compound interest with configurable compounding frequency.
Calculated locally in your browser. Nothing you enter is uploaded or stored.
Overview
Calculates how an investment or deposit grows when interest is added periodically and starts earning interest itself.
How to use it
- 1Enter the principal amount.
- 2Enter the annual interest rate.
- 3Choose a compounding frequency (annually, quarterly, monthly or daily).
- 4Enter the duration.
- 5View the final amount and total interest earned.
Formula
Compound interest
A = P × (1 + r/n)^(n×t)
P = principal, r = annual rate, n = compounding periods per year, t = years.
Tips
- This calculator provides an estimate for planning purposes only and is not financial advice.
- More frequent compounding (daily vs. annual) yields slightly more return for the same nominal rate.