About Simple Interest Calculator

Simple interest is the most straightforward way to calculate the cost of borrowing money or the return on an investment. Unlike compound interest, it does not accrue interest on previously earned interest. It is simply a fixed percentage of the principal amount, multiplied by the duration of the loan or investment.

• Dynamic bidirectional engine: Calculate the Interest, Principal, Rate, or Time easily
• Instantly view your total accumulated amount at the end of the term
• Perfect for short-term personal loans, simple bonds, and basic lending agreements
• Clean interface includes a quick reset button for rapid recalculations

🔒 All calculations are performed locally on your device. No data is sent to any server.