# Simple Interest Calculator

Principal Amount:

Rate of interest:

%

Time Period:

 Total Interest Total Amount

Free online simple interest calculator – Calculate the simple interest and total amount after the interest rate.

## The formula of simple interest

• simple interest(SI) = P x R x T / 100
• SI = Simple interest
• P = Principal amount
• R = Rate of interest(P.A)
• T = time in years

## Solved Example

Example 1:-Find the simple interest if \$2000 is invested for 2 years on 25% P.A.

solve:-simple interest(SI) = P x R x T / 100 = 2000*25*2/100 = 1000

Total Amount = SI + Principal Amount = 1000 + 2000 = 3000

Example 2:-Find the simple interest if \$1000 is invested for 2 years and 6 months on 10% pa.

solve:-T = 2 + 6/12 = 2 + 1/2 = 5/2 yr

SI = P x R x T / 100 = 1000*10*2.5/100 = \$250

Total Amount = \$250 + \$1000 = \$1250

## How to use this simple interest calculator

Enter the principal amount in the proper input field and rate of interest(pa) enter a percentage value in the proper input field and then finally enter in time duration(yr) and click the calculate button you get all answers in the answer box with principal amount, total interest and total amount.