Factorial Calculator (n!)

Calculate the factorial from a number (n!) and see the detailed step-by-step calculation process.

n! = ?
n =
Result:

How to calculate Factorial of a Number?

To calculate factorial (n!), multiply all positive integers from 1 to the given number.

Simply follow these steps:

  1. Start with 1.
  2. If n is greater than 1, multiply the current result by 2.
  3. Then, if n is greater than 2, multiply the result by 3.
  4. Continue this process, adding 1 to the previous number each time, until you reach the number n.
n! = 1 × 2 × 3 × ... × n

Examples

4! = 1 × 2 × 3 × 4 = 24
5! = 1 × 2 × 3 × 4 × 5 = 120
8! = 1 × 2 × 3 × 4 × 5 × 6 × 7 × 8 = 40320