Need to calculate APR quickly & easily? Learn how to calculate APR on a loan or credit card so you can save the most money. Read this guide to learn more!

How Simple Interest Works: An Example Suppose you take out a $5,000 loan at 6% interest for two years. To calculate the amount of interest you will pay, use the simple interest formula above.

Find out how to calculate APR on car loan with real numbers so you can check lender estimates yourself.

How To Calculate Simple Interest on a CD Simple interest is the interest rate without compounding, meaning it’s applied just once and only to the principal.

Curious about how the interest on your loan works? Learn how interest rates are determined and how to calculate interest on a loan yourself.

Calculate APR from simple interest rates by extending or reducing the time period to a single year. For example, a CD may offer 1.5 percent simple interest over a three-month period.

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.

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.

Credit cards charge interest, known as APR, if you carry a balance past your due date. Here's a step-by-step guide on how to calculate your credit card interest.

You can use your credit card's APR to estimate how much interest you'll pay each month.

Wondering how much interest you could earn in a savings account? Here's how to crunch the numbers to calculate your earnings.

Calculate mortgage APR using your interest rate, discount points and other fees through this calculator.