Financial
Simple Interest Calculator
Calculate simple interest on a principal over time.
Interest
$1,500.00
Total amount$11,500.00
How it works
I = P · r · t
Interest is calculated only on the original principal. Common for short-term loans, some auto loans, and Treasury bills.
Frequently asked
Simple or compound?
Simple interest grows linearly; compound grows exponentially. Long-term investments should compound.
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