Calculate factorial
Compute n! for non-negative integers.
Also known as: calculate factorial calculator, factorial calculator, calculate factorial, probability math, probability calculate factorial
Inputs
Results update when you click Calculate.
8!
40,320
8! = 8 × 7 × … × 1
- Scientific4.0320e+4
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What this result means
Compute n! for non-negative integers. n! = n × (n−1) × … × 1, with 0! = 1.
Assumptions
- Rule dependency: Universal formula.
How is it calculated?
n! = n × (n−1) × … × 1, with 0! = 1.
Example
8! = 40,320.
Frequently asked questions
Max n?+
Capped at 170 before floating-point overflow.