Online Calculator

Compound Interest Calculator

Compound Interest Calculator calculates loans, investments or savings with compound interest. Simple interest investments can only earn interest on the principal while compound interest investments earn interest on interest. If you are looking for simple interest calculation, please use our Interest Calculator.

Compound Calculator is a compound interest calculator with contributions where you can make additional monthly or yearly contributions. You also have the option to adjust when whether the contribution be made at the start or end of each compound period.

Compound Calculator

Principal Amount: $
Annual Interest Rate: %
Years: years
Compound Period: time(s) annually.
Contributions: $
Make contributions at:

Compound Interest Formula

Below is the compound interest formula
A = P (1 + r/n)^(nt)
Where: A = is the future value of investment/loan including interest earned
P = is the the principal investment or loan amount
r = is the the annual interest rate in decimal
n = is the number of times that interest will be compounded per year
t = is the number of years the money is invested or borrowed

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