Learn what simple interest is and how to calculate it using examples with a simple interest formula. You can also use a simple interest calculator.

Simple interest works in your favor when you borrow money, while compound interest is better for you as an investor.

Different methods in interest calculation can end up with different interest payments. Learn the differences between simple and compound interest.

To calculate per-diem interest, take the interest rate (be sure to express it as a decimal, so 10% becomes 0.10) and divide by 365 to determine the daily interest rate.

Learn how to calculate the Simple Interest in Excel either for a single entry or a range or entries, between two dates, using this forumula.

The TI-83 scientific calculator includes a finance-solving application that can do advanced calculations about the time value of money. It can also solve the basic equation for simple interest ...