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Permutation and Combination Calculator

nPr and nCr.

Permutations and combinations

10P3
720
Ordered arrangements (order matters)
10C3
120
Unordered selections (combinations)
Ratio
6× more permutations
P/C = r! ordering choices per combination
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Permutation and Combination Calculator · Generated 5/2/2026 · calccenter.online/calculators/math/permutation-combination

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About the Permutation and Combination Calculator

MethodologyHome

nPr and nCr. Use this free permutation and combination calculator to get instant results. All calculations run in your browser — nothing is sent to a server.

Frequently asked questions

What does this Permutation and Combination Calculator do?

nPr and nCr.

Is it free?

Yes — every calculator on Calc Center is free, with no sign-up or account required.

Does it work offline?

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