Calculadora de Factorial (n!)

Last updated: 2026-08-24

Calculadora de Factorial (n!) — Calcula n! = n × (n-1) × … × 2 × 1. Ejemplo: 5! = 120. Calculadora gratuita y precisa, sin registro. Obten resultados al instante con explicacion paso a.
Inputs
Result
Enter values and press Calculate

How to use it

  1. [object Object]
  2. [object Object]
  3. [object Object]
  4. [object Object]

Common mistakes

  • ⚠️ Forgetting that 0! = 1 by definition (not 0)
  • ⚠️ Entering values above 170 causing JavaScript Infinity
  • ⚠️ Confusing factorial with exponentiation (8! ≠ 8⁸)

Worked example

Calculate 8! (8 factorial) for permutation and combination probability problems

The resultado ({resultado}) is n! = n × (n-1) × (n-2) × ... × 2 × 1, representing the number of ways to arrange n distinct items.

Input guide

FieldTypical range
nValid: 0-170; Common: 1-20 for combinatorics; 170 is JS max before Infinity