Simple Interest Calculator
Simple interest equals principal × annual rate × years. It is calculated only on the original principal, so interest does not itself earn interest.
This calculator is free to use. Enable JavaScript to enter your values and see a result instantly.
How it works
Simple interest equals principal × annual rate × years. It is calculated only on the original principal, so interest does not itself earn interest.
Worked example
$10,000 at 5% simple interest for three years earns $1,500, bringing the total to $11,500.
Keep in mind
Check whether an agreement uses a different day-count convention or adds fees.