Factorial Calculator
Calculate the factorial (n!) of any non-negative integer instantly.
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n!
120
How this tool works
What it accepts, how to use it, and where your input is processed.
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How this tool works
What it accepts, how to use it, and where your input is processed.
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
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