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About This Tool
The Simple Interest Calculator computes interest using the straightforward formula: Interest = (Principal × Rate × Time) / 100. Unlike compound interest, simple interest is calculated only on the original principal amount.
Enter the principal amount, annual interest rate, and time period in years to instantly see the interest earned and the total amount. This is commonly used for short-term loans, certificates of deposit, and basic savings calculations.
This tool is perfect for quick calculations when you need to estimate interest on fixed deposits or simple loan arrangements.