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- Compound Interest Calculator

**Compound interest is calculated on both the initial payment and the interest earned in previous
periods.**

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Examples:

example 1:ex 1:

What is the value of a $4500 deposit at 7% compounded annual interest if it is held in a
bank for 9 years?

example 2:ex 2:

What will a $3500 deposit at 10% compounded
monthly be worth after 8 years in the bank?

example 3:ex 3:

How much money would you need to put today at 8% annual compounded monthly
interest to have $1200 in the account after 12 years?

example 4:ex 4:

Determine the present value of $1000 at a 12% annual interest rate compounded
quarterly at the end of two years.

example 5:ex 5:

What is the estimated yearly interest rate if you give someone $1700 and get repaid
$1910 in two years?

example 6:ex 6:

Assume that a savings account with a principal of $1350 is compounded monthly.
After 8 months, the total had risen to $1424. What was the interest rate per year?

example 7:ex 7:

How long does it take $4300 to grow to $6720 when compounded quarterly at
9%?

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