Simple Interest Calculator
Compute linear interest on short-term loans, promissory notes, and fixed-deposit savings balances.
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How to Use the Simple Interest Calculator
Enter the required values in the fields above and click Calculate. All calculations are executed directly inside your web browser using proven mathematical formulas, ensuring instantaneous results and 100% privacy without transmitting your numbers to remote servers.
Mathematical Formula
Interest (I) = P × r × t | Total Balance = P + I
Worked Example
A $2,000 deposit at 5% simple interest for 4 years yields $400.00 in interest ($2,400.00 final balance).
Important Notes & Limitations
Simple interest does not account for interest earned on prior interest payments.
Frequently Asked Questions
It is commonly used for short-term personal loans, car titles, and straightforward promissory agreements.