☰

Permutation and Combination Calculator

Count ordered permutations or unordered combinations of selected items.

Your inputs

Your result

Enter your information and select Calculate to see the result.

How this calculator works

Permutations retain order; combinations divide those arrangements by the factorial of selected items.

Change one assumption at a time to see which inputs have the greatest effect on the estimate.

Worked example

Choosing 2 people from 5 gives 10 combinations.

Limitations

This calculator is for educational use; verify important work independently.

Review this educational estimate against current quotes, official information, and your own budget before making a financial decision.