Factorial (n!)
Calculate Factorial (n!) instantly with the exact formula and a worked example. Free online calculator — no signup, works on mobile.
Factorial (n!)
n
n!
5,040
More about: Factorial (n!)
What it calculates
The “Factorial (n!)” calculator computes n! from 1 parameter: n.
A core calculation for studying, engineering tasks, and checking solutions.
Example calculation
With parameters n = 7 the result is 5,040.
How to use
- Enter the parameter values — every field above is adjustable with a slider.
- The result and related metrics are calculated automatically as you type.
- Use the additional metrics shown (if any) where needed.
- Copy the result or bookmark the page.