Simple Interest Calculator
Calculate simple interest using the formula P × R × T / 100. Shows interest earned and total amount (principal plus interest).
How to Use Simple Interest Calculator
The Simple Interest Calculator computes interest using the standard formula SI = P × R × T / 100, where P is the principal amount, R is the annual interest rate as a percentage, and T is the time period in years. Enter your principal, rate, and time to instantly see the interest earned and the total amount (principal + interest). This is useful for understanding basic loan costs, fixed deposit returns, and simple financial planning. Unlike compound interest, simple interest is calculated only on the original principal, making it straightforward to understand and predict.
Step-by-Step Instructions
- Enter the principal amount in dollars
- Enter the annual interest rate as a percentage
- Enter the time period in years
- Click Calculate to see interest and total amount
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