Compound interest calculator

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

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Compound Interest Calculator

Find out the amount you'll receive after investing time.
help ↓↓ examples ↓↓

Principal:

Interest rate:

% per year

Time:

Compound:

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Compound Interest Calculator

Here you can select a value you want to find.
help ↓↓ examples ↓↓

I want to calculate:

Input known variables:

Principal:

Interest rate:

% per year.

Time:

Compound:

Amount:

Hide steps

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Get Widget Code

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Examples

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?

ex 2:

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

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?

ex 4:

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

ex 5:

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

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?

ex 7:

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

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