Simple Interest Calculator

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Simple Interest Calculator

Calculate simple interest using the formula SI = (P × R × T) / 100.

Principal Amount

$

Annual Interest Rate (%)

%

Time Period

Years Months Days

Total Amount

$0

Principal Amount$0

Interest Amount$0

Annual Rate0%

Time Period0

About Simple Interest Calculator

Simple interest is calculated on the principal amount only. The formula is SI = P × R × T / 100 where P is principal, R is rate per annum, and T is time in years. Use this calculator for quick interest calculations on loans, savings, or investments.