Enter factorial statement:


How does the Factorials Calculator work?
Free Factorials Calculator - Calculates the following factorial items:
* A factorial of one number such as n!
* A factorial of a numerator divided by a factorial of a denominator such as n!m!/a!b!
* Double Factorials such as n!!
* Stirlings Approximation for n!
This calculator has 1 input.

What 1 formula is used for the Factorials Calculator?

n! = n * (n - 1) * (n - 2) * ... * 2 * 1

For more math formulas, check out our Formula Dossier
What 2 concepts are covered in the Factorials Calculator?
The product of an integer and all the integers below it
stirlings approximation
Example calculations for the Factorials Calculator

Factorials Calculator Video

Numerator Factorials

Denominator Factorials

Simplify factorial expansions:

Numerator Product = =

Numerator Product = =

Denominator Product = =

Simplify and evaluate: