Factorial Calculator

Enter the number in the calculator below and click the calculate button.

Below this page, you can also find the answers for frequently asked questions about this subject.
Factorial Calculator
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  1. e.g 12

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What is factorial?

In mathematics, the name given to an exclamation point to the right is a special case of the more general Gamma Function limited to integers.

How is factorial calculated?

It shows the product obtained by multiplying the given positive integer with all previous integers until 1.

Example:

  • 1! = 1
  • 2! = 2 x 1 = 2
  • 3! = 3 x 2 x 1 = 6
  • 4! = 4 x 3 x 2 x 1 = 24