Factorial CalculatorMath
Calculate the factorial (n!) of any non-negative integer instantly.
n!
120
Capabilities & How-To Guide
Instructions, supported options, and client-side privacy guarantee.
Show GuideHide Guide
Capabilities & How-To Guide
Instructions, supported options, and client-side privacy guarantee.
Show GuideHide Guide
The Factorial of a positive integer n is the product of all positive integers less than or equal to n. It is denoted by n!.
Mathematical Scale:
Factorials grow extremely fast. For example, 10! is 3,628,800, but 70! is already larger than the number of atoms in the observable universe!
5! = 5 × 4 × 3 × 2 × 1 = 120
Need an extra feature or found an edge case?Send Feedback
Related tools
Other utilities people use next.
Random Number Generator
MathGenerate truly random numbers within any range for games, contests, or research.
Open tool
Prime Number Checker
MathInstantly find out if a number is a prime number or composite.
Open tool
Prime Factorization
MathBreak down any number into its prime factors using our fast mathematical algorithm.
Open tool