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

Calculate probability → Calculate factorials → Statistics calculator →

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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