Calculate the factorial of a number (n!) accurately, even for large numbers, as well as the number of digits and scientific notation.
The factorial calculator computes the factorial of a number n! which is the product of all positive integers from 1 to n. The calculator works accurately even for large numbers and shows the number of digits.
The calculator is free, works in your browser without registration, and displays the result as soon as you change the values. The calculations are done on your device and the information you enter is not sent anywhere.
n! = 1 × 2 × 3 × … × n. Special case: 0! = 1.
5! = 5 × 4 × 3 × 2 × 1 = 120. By default, 10! = 3,628,800. With default values, the calculator gives the result: 10! 3,628,800.
Students of mathematics, statistics, and combinatorics, and anyone who needs factorials for permutation and combination calculations.
The factorial n! is the product of all integers from 1 to n. For example, 4! = 24.
By definition, the empty product is 1, and it fits into formulas such as the number of permutations.
In permutations, combinations, and probability calculations.