Combination & Permutation Calculator

Calculate combinations (nCr) and permutations (nPr) for counting problems.

n (Total Items)*

r (Items to Choose)*

Calculation Type*

Combination (nCr)ⓘ

Permutation (nPr)ⓘ

n! (Factorial of n)ⓘ

120

r! (Factorial of r)ⓘ