Interest Calculator

Calculate simple interest (principal × rate × time).

Principal ($) Interest Rate (APR %) Time (Years)

Note: This tool uses simple interest. Some loans or accounts use compounding, fees, or different schedules.

About This Interest Calculator

This interest calculator uses simple interest to estimate how much interest is earned or owed over a period of time.

Simple interest is calculated by multiplying the principal, interest rate, and time. This method is commonly used for basic estimates and educational purposes.

Some loans and savings accounts use compound interest, which may produce different results. This calculator is designed to keep things easy to understand.

If you want to compare interest costs, this tool helps you see how rate and time impact the total amount paid or earned.