🧮
Simple Interest Calculator
Calculate simple interest and total amount.
Simple interest = Principal × Rate × Time.
About this tool
This simple interest calculator helps you calculate simple interest and total payable amount. It is designed for Indian users who compare numbers quickly on mobile and want a result they can share on WhatsApp.
We show the key outputs first, then explain the formula and assumptions in plain English. You can tweak rate/tenure/contribution values to run multiple scenarios.
Simple interest is commonly used for short-term estimates; many products actually compound. Always verify with your bank/NBFC or official statement before making a financial decision.
How to use
- 1 Enter your inputs (amount, rate, tenure, or contribution).
- 2 Click Calculate to get the key results instantly.
- 3 Use the example cases to validate your inputs.
- 4 Adjust one variable at a time to compare scenarios.
- 5 Bookmark the page for repeated use.
Examples
Quick example
Sensitivity check
Notes & assumptions
- Rates are annual unless stated otherwise; compounding can change outcomes.
- Results are estimates, not a guarantee of returns or approval.
- For taxes/fees, confirm the latest official rules for your state and product.
- Rounding may create small differences vs. lender statements.
- Use inflation-adjusted planning for long goals.
Frequently asked questions
? Is this calculator free to use?
Yes. It is free and works directly in your browser.
? Why is my bank’s number different?
Banks may use different day-count conventions, rounding, or fee/tax handling. Use this as an estimate and cross-check with the bank’s schedule.
? Can I share the results?
Yes—many people copy the results into WhatsApp messages while comparing options.
? Do you store my inputs?
No. Calculations run on-demand and are not intended to store personal data.