Compound Interest Calculator

Principal Amount

Annual Interest Rate (%)

Common Interest Rates

Time Period (Years)

Common Time Periods

Compounding Frequency

Guide & Explanations

Enter principal amount: The initial amount you invest or borrow
Specify interest rate: The annual interest rate in percentage
Set time period: The duration of the investment or loan in years
Select compounding frequency: How often interest is calculated and added
Click Calculate: View your results showing principal, interest earned, and final amount
View formula: Click "Show Formula" to see the detailed calculation steps

Tip: More frequent compounding (monthly, daily) results in higher returns than less frequent compounding (annually) for the same interest rate.