Simple Interest Calculator
Calculate simple interest — find interest and total amount from principal, rate and time. Perfect for a committee, a loan from a friend, or basic saving.
Interest Earned
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Total Amount
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Formula
I = P × R × T / 100
How to use
- Choose the mode from above — find interest, rate, time or principal.
- Enter the other values: principal in Rs, rate in %, time in years or months.
- The result shows instantly — no button to press.
- Simple interest is charged only on the original principal — it does not add interest on interest like compound interest.