Free · Math · Combinatorics

Permutation and Combination Calculator

Calculate ordered permutations and unordered combinations for n objects chosen r at a time.

  • Checked formula
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  • No signup
Calculator inputs

Enter your values

Result

Your calculation

Permutations nPr
720
Order matters
Combinations nCr
120
Order does not matter
n!
3,628,800

How to use this calculator

  1. Enter the known values using the units shown.
  2. Choose the calculation you want when more than one method is available.
  3. Calculate, then review the result and the worked formula together.

Private by default

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