Tool capabilities
- Input
- Options
- Output
- Options
How to use Simple Interest
Calculate noncompounding interest over time. This simple interest works directly in your browser and is free to use without an account.
- Enter the values in the labeled fields using consistent units.
- Read the calculated result, supporting values and formula.
- Adjust an input to compare another scenario or copy the result.
Simple Interest · Example
Input
Starting amount: 1000 Annual interest (%): 5 Years: 3
Output
Final balance: 1150 Interest: 150
Formula: P + P × r × t
Usage notes
Inputs and results are processed on this device. Tool content is not sent to a processing server.
Calculations use the displayed assumptions and ordinary floating-point arithmetic. Rounding may affect the last displayed digits.