Factorial of number

Factorial Calculator

Enter a number (0-170):

Result

Examples:

5! = 5 × 4 × 3 × 2 × 1 = 120

4! = 4 × 3 × 2 × 1 = 24

3! = 3 × 2 × 1 = 6

0! = 1 (by definition)

Note: Maximum supported value is 170 due to JavaScript limitations.