Simple Interest Calculator
Compute simple interest on a principal at a fixed annual rate.
Calculator
Simple Interest Calculator
Result
—
Formula
I = P × r × t ÷ 100
Step-by-step
- 1
Enter the principal
The original amount.
- 2
Enter rate and time
Annual percentage rate and years.
Worked example
Example input: principal: 1000, rate: 5, years: 3
Result: 150
Related tools
- Compound Interest
Interest on interest.
- Loan Payment
Monthly EMI.