How does the Factorial Calculator work?
The Formula
n! = n * (n-1) * ... * 1Example: 5! = 120.
Frequently Asked Questions
Zero?
0! = 1.
Calculate the factorial (n!) of any positive integer instantly. Our Factorial Calculator is a vital tool for probability, permutations, and combinations, providing results for large numbers with mathematical precision.
n! = n * (n-1) * ... * 10! = 1.