Simple Interest Calculator
Calculate interest earned at a fixed annual rate.
Simple Interest
Calculate interest earned at a fixed annual rate.
%
Final amount
1100
- Interest: 100
How it works
Enter the principal, the annual interest rate, and the number of years.
Interest accrues at the same fixed amount each year — it is not calculated on previously earned interest.
Formula
interest = principal × rate × time
Worked example: 1000 at 5% for 2 years earns 100 interest, for a final amount of 1100