Simple Interest Calculator
Calculate simple interest and the final amount from principal, annual rate and time in years.
Result
Interest: 1,000 Total: 11,000
How simple interest calculator works
Simple interest = principal x annual rate x years / 100. Total = principal + interest.
How to use this tool
- Enter your values or text in the tool form.
- Review the result as you change the inputs, or select the action button for code tools.
- Copy the result or download it where a download option is available.
Worked example
10,000 at 5% simple annual interest for two years earns 1,000, giving a total of 11,000.
Accuracy and limits
Simple interest does not compound. Fees, withholding taxes and day-count conventions are not included.
Frequently asked questions
How does simple interest calculator work?
Simple interest = principal x annual rate x years / 100. Total = principal + interest.
What should I check before using the result?
Simple interest does not compound. Fees, withholding taxes and day-count conventions are not included.
Is Simple Interest Calculator free to use?
Yes. Simple Interest Calculator is free, browser-based, and does not require signup.
Does this tool save my data?
Tool inputs are processed on your device. File tools do not upload your files. Website analytics are described in the privacy policy.
Can I use it on mobile?
Yes. The page is responsive and works on modern mobile, tablet, and desktop browsers.
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Reviewed 2026-10-24. By Mahad and Mehdi Developers.