Permutations & Combinations Calculator

Calculate ordered permutations and unordered combinations.

Compare arrangements where order matters with selections where it does not.

Your inputs stay on your device

Calculate permutations and combinations

live result

First value

Second value

Permutations

Combinations

Enter dimensions or values only; results are mathematical estimates and do not replace construction, engineering, or academic requirements.

Context & Reference

For counting ordered arrangements and unordered selections.

calculator guide

Uses factorial formulas for nPr and nCr.

Use this calculator with your own values, then review the clearly labelled result and copy it when you need it elsewhere.

Permutations treat order as different; combinations do not.

Choose 3 items from 10.

n is capped at 170.

This calculator runs locally in this browser. n is capped at 170.

Useful next steps

Continue with a closely related task, calculation, conversion, or local text tool.

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Simplify a ratio and compare its two values.