Interest Calculator – Simple, Compound & Fixed Interest

 

Interest Calculator

Definition & Purpose

This calculator helps you find out how much interest you will earn on your investment or loan, using simple or compound interest methods.

How to Use

1. Select interest type (simple or compound).
2. Enter principal, rate, time, and time unit.
3. Choose compounding frequency if compound interest.
4. Click Calculate to see results and chart.

Interest Type Simple Interest Compound Interest Principal Amount Initial amount invested or loaned (no currency symbols). Annual Interest Rate (%) Yearly interest rate as a percentage (e.g. 5 for 5%). Time Duration Duration in the selected time unit. Time Unit Years Months Days