Simple Interest Calculator

Calculate the interest in a simple way by defining specific principal, interest rate, and period.

$
% per year
Result:
$
$

How to calculate Simple Interest?

  1. Fill in the Principal Amount field.
  2. Fill in the Interest Rate field (% per year).
  3. Specify the period.
  4. Click "Calculate".

After completing these steps, see your calculated Interest Amount and Total Amount in the Result section.

Simple Interest Formula

Interest amount = PA * IR / 100 * y
Where:
  • PA = Principal amount
  • IR = Interest Rate % per year
  • y = Period in years

Examples

Principal amount Interest rate Period Interest amount Total amount
$1000 5% per year 10 years $500 $1500
$5000 10% per year 3 months $125 $5125
$50000 3% per year 15 years $22500 $72500

See Also: