The simple interest calculator helps to calculate the interest amount using principal amount, annual interest rate, and investment time.

The simple interest calculator is a free financial tool where you can compute the interest amount and total amount on your investment. Just enter the principal amount, annual interest rate, and the investment time and press the 'Calculate' button. As a result, the tool will display the interest amount and total amount in an instant.

The simple interest is calculated using the following formula.

A = P(1 + rt)

Where,

A = Final amount (principal + interest)

P = Principal amount

r = Annual interest rate (decimal)

t = Time (in years)