Compound Interest Calculator
See how savings grow with compound interest.
20,096.61
Final Amount
10,096.61
Interest Earned
10,000
Principal
Free online compound interest calculator. Enter a principal, annual rate, number of years and compounding frequency to see the final amount and interest earned. Great for savings and investments.
How to use the Compound Interest Calculator
- 01Enter your starting principal and the annual interest rate.
- 02Enter the number of years and choose how often interest compounds.
- 03See the final amount and the interest earned on top of your principal.
Frequently asked questions
What is the compound interest formula?
It uses A = P(1 + r/n)^(nt), where P is the principal, r is the annual rate, n is the number of compounds per year and t is the number of years.
Does more frequent compounding earn more?
Yes, slightly. Daily compounding earns marginally more than annual compounding at the same rate, because interest is added to the balance more often.