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Free Permutation Calculator - nPr
Calculate permutations (arrangements where order matters) using the nPr formula.
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CalculateQuick Answer
Permutation counts arrangements where order matters. P(n,r) = n!/(n-r)!. For 5 items choosing 3: P(5,3) = 5!/2! = 60.
Key Facts about Permutation Calculator:
- Order matters in permutations
- P(n,r) = n!/(n-r)!
- Permutations ≥ combinations
- P(n,n) = n!
- Used in probability
Why Use Our Permutation Calculator?
Permutation tools:
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nPr Formula
Permutation calculation.
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Step-by-Step
Shows work.
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Large Numbers
Big factorials.
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vs Combinations
Understand difference.
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Instant
Quick results.
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Private
Data stays secure.
How to Permutation Calculator in 3 Easy Steps
Calculate permutations:
1
Enter n
Total items.
2
Enter r
Items to arrange.
3
Get P(n,r)
See result.
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Arrangements
Order matters
Frequently Asked Questions
Everything you need to know about our permutation calculator
Permutation vs combination?
Permutation: order matters. Combination: order doesn't.
Permutation: order matters (AB≠BA). Combination: order doesn't matter (AB=BA).
Still have questions? Try the tool yourself!
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