Factorial Calculator

Calculate the factorial of any non-negative integer. Factorial (n!) is the product of all positive integers less than or equal to n.

Enter a number (0-170):

Result:

What is a Factorial?

The factorial of a non-negative integer n is the product of all positive integers less than or equal to n. It's denoted by n!.

Example: 5! = 5 × 4 × 3 × 2 × 1 = 120

Note: 0! is defined as 1 by convention.

---

Sponsored by DebWeb360 — Discover AI Tools & Research Papers.