Calculate simple interest formula using SI = P × R × T / 100. Enter principal, annual rate, and time in days, months, or years.
Simple Interest Formula Calculator
Free simple interest formula calculator. Get interest and total amount from principal, rate, and time.
Interest
$1,600.00
Total amount$11,600.00
Steps
- Enter your values
- Read the calculated result
- Adjust inputs to compare scenarios
Related
FAQ
Are results official?
No — quick estimates only. Confirm with your bank or provider.
Is data saved?
No. Calculations run in your browser.
Where is the full tool?
Each satellite links back to the main hub calculator.