Free Simple Interest Calculator
Calculate simple interest for any principal, rate, and time. Free, instant.
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How to Use This Tool
Enter principal, annual rate, and time in years. Simple Interest = Principal × Rate × Time.
Why Use This?
Simple interest is used in short-term loans, some bonds, and basic financial calculations. Understanding it is fundamental to financial literacy.
Frequently Asked Questions
How is simple interest different from compound? Simple interest is calculated only on the original principal. Compound interest is calculated on principal plus accumulated interest.