Combination & Permutation Calculator

Calculate combinations and permutations

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How to Use Combination & Permutation Calculator

Enter n and r

Enter total items (n) and selected (r).

Calculate

Get nCr and nPr results.

Steps

See formula breakdown.

Why Choose AllTools Combination & Permutation Calculator?

  • Combinations nCr
  • Permutations nPr
  • Step-by-step
  • Large number support
  • Formula display
  • No data stored

Why Use This Tool

  • Instant calculations with no server round-trip
  • Completely free with no usage limits
  • No account or registration required
  • Accurate results using standard mathematical formulas
  • Works on any device including phones and tablets

Related Resources

Frequently Asked Questions

What is the difference between combinations and permutations?
Combinations: order does not matter (selecting a team). Permutations: order matters (ranking places).
What is the difference between combinations and permutations?
Combinations (nCr) ignore order. Permutations (nPr) count different orderings as distinct arrangements.
Does this work on mobile?
Yes. All AllTools calculators are fully responsive and work on phones and tablets.

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