Simple Interest Calculator
Calculate interest and total amount with a fixed-rate simple interest formula.
Interest earned
$3,000.00
Total amount
$13,000.00
Formula
Interest = principal × rate × time.
Use the simple interest calculator to estimate interest earned or owed on a principal amount without compounding over time.
How to Use
Use the simple interest calculator to estimate interest earned or owed on a principal amount without compounding over time. Enter the Principal amount, Annual rate, and Years values and review the Interest earned and Total amount outputs after you calculate.
- Open the calculator : Start with Simple Interest Calculator.
- Enter values : Fill in the required inputs and any optional settings.
- Review the result : Read the output and use the about page for more detail if needed.
Common Questions
What does the Simple Interest Calculator estimate?
Calculate interest and total amount with a fixed-rate simple interest formula.
What can change the estimate?
This is an estimate, so taxes, fees, payment timing, compounding, and changing returns can move the result.