Simple Interest Calculator

Calculate Simple Interest

Simple Interest is calculated only on the principal amount, not on accumulated interest. It's the most basic form of interest calculation.

Formula Used:

Simple Interest = (Principal × Rate × Time) ÷ 100
Final Amount = Principal + Simple Interest

Find any missing value when you know the other three values in the simple interest formula.

What do you want to find?

Principal Amount ($)

Interest Rate (% per year)

Time Period (years)

Simple Interest ($)