Aug 1, 2025 · What is a Factorial? A factorial is a function that multiplies a number by every number below it. For example 5!= 5*4*3*2*1=120. The function is used, among other things, to …

Implementations of the factorial function are commonly used as an example of different computer programming styles, and are included in scientific calculators and scientific computing …

The factorial is a quantity defined for any integer n greater than or equal to 0. The factorial is the product of all integers less than or equal to n but greater than or equal to 1.

Free Factorial Calculator - Simplify factorial expressions using algebraic rules step-by-step

We explain Factorial growth step by step. Learn how to use and calculate the Factorial formula easily.

You can use our Factorial Calculator to calculate the factorial of any real number between 0 and 5,000. To use this calculator just enter a positive integer number less than or equal to 5000.

The factorial function (symbol: !) says to multiply all whole numbers from our chosen number down to 1. We usually say (for example) 4! as "4 factorial", but some people say "4 shriek" or …

In doing that, we will also introduce the Gamma function, which is, in plain terms, an extended factorial formula that includes all positive numbers and the 0-factorial.

Calculate the factorial n! of any positive whole number, plus learn how to use the formulas to solve factorials.

The calculator will find the factorial of the given number (integer or non-integer, negative or non-negative), with steps shown.