Insert the information in the form and the calculator will determine the factorial.

What is the factorial?

The factorial of a non-negative integer n is the product of all positive integers less than or equal to n. The factorial of n is also equal to the product of n with the next smaller factorial. It is denoted by n! .

How to calculate factorial?

To calculate factorial you should use the following formula:
n! = n * (n-1) * ...... * 1

Why use factorial?

The factorial is used to give the number of ways you can arrange the given items.