Math
Permutation and Combination Calculator
Compute P(n, r), C(n, r), and n! for non-negative integers.
Free to use — no sign-up or login.
P(n, r)
C(n, r)
n!
This free Permutation and Combination Calculator covers Compute P(n, r), C(n, r), and n! for non-negative integers.
Permutations count ordered selections; combinations ignore order. Related math tools sit beside How it works, with no account required.
Using the Permutation and Combination Calculator
Compute P(n, r), C(n, r), and n! for non-negative integers. Fill the labeled fields on the Permutation and Combination Calculator and read the result. The formula stays in How it works rather than being repeated here.
FAQ
How do I use the Permutation and Combination Calculator?
Enter the labeled values on the Permutation and Combination Calculator and read the output. Permutations.
What formula does the Permutation and Combination Calculator use?
The Permutation and Combination Calculator uses the identity in How it works. In words: Permutations.