Compound Interest Calculator calculates interest not only on the initial principal as simple interest does, but also on the accumulated interest of previous periods.

Compound Interest Calculator will show you how your money can grow over time with compound interest. Simply set your parameters and then click the "Calculate" button. 

Please note that in other countries like Britain, a billion has twice as many zeros as a million, and a trillion has three times as many zeros as a million. In US billion has 9 zeros and trillion has 12 zeros.