Free Simple Interest Calculator Online — Calculate simple interest on principal amount
Interest Earned
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Total Amount
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Monthly Interest
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How to Calculate Simple Interest
Enter principal amount, annual interest rate, and time period. Simple Interest = P × R × T / 100. The tool shows interest earned, total amount, and monthly interest breakdown.
What is Simple Interest?
Simple interest is calculated only on the original principal. Unlike compound interest, it doesn't earn interest on previously earned interest. Used in short-term loans and FDs.
Simple Interest Formula
SI = (P × R × T) / 100, where P = Principal, R = Annual Rate (%), T = Time in years. Total Amount = P + SI.
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