Online Tools and Calculators > Financial Calculators > Simple Interest Calculator

Simple Interest Calculator

Annual Interest Rate: %

About Simple Interest Calculator

The Simple Interest Calculator is used to calculate the simple interest, which means interest paid only on the original principal, not on the interest accrued.

Simple Interest Formula

The simple interest calculation formula is as follows:

A = P(1 + rt)

A = final amount
P = principal amount (initial investment)
r = annual nominal interest rate
t = number of years


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