Simple Interest Calculator
Compute interest earned only on the principal amount, without compounding.
How to use
Enter principal, rate and years.
Formula
I = P × r × t
Examples
- $10,000 at 5% for 3 years → Interest = $1,500, Total = $11,500
Important notes
For fixed simple interest loans only.
Frequently asked questions
What is simple interest?
Interest calculated only on the original principal.