Search results
Learn how to calculate compound interest using a simple formula and examples. Find out how to work out the present value, future value, interest rate and number of periods for different scenarios.
Learn what is compound interest, how to calculate it and its applications in maths and real life. Find the formulas for different compounding frequencies and periods, and see solved examples and FAQs.
- 55 min
Learn how compound interest is different from simple interest and how to calculate it with a formula. Watch a video and see how compound interest is a special case of percentage increase.
- 8 min
- Aanand Srinivas
Learn the basics of compound interest, how it affects the growth of money over time, and how to calculate it with examples. Watch a video by Sal Khan and join the discussion with other learners.
- 7 min
- Sal Khan
Compound Interest; Discussing interest starts with the principal, or amount your account starts with. This could be a starting investment, or the starting amount of a loan. Interest, in its most simple form, is calculated as a percent of the principal.
Learn how to solve problems involving compound interest by using a percentage change formula. Watch a video and follow the steps to find the total amount and interest after six months.
- 15 min
- Aanand Srinivas
Learn how to use the compound interest formula to calculate the future value, interest rate, principal and time factor of an investment or loan. See variations of the formula for different compounding intervals and examples with step-by-step explanations.