Free Permutations & Combinations Calculator (nPr & nCr) Online
Calculate combinations nCr (order does not matter) and permutations nPr (order matters) with full factorials and step-by-step breakdown. — 100% free online utility, zero sign-up, zero paywalls, and private client-side processing.
How It Works
Enter Total Items (n)
Input the total number of objects in the set.
Enter Chosen Items (r)
Input the number of items being selected (r ≤ n).
Choose Ordering Constraint
Select Permutation (Order Matters) or Combination (Order Does Not Matter).
Review Factorial Solution
View exact computed integer result and reduction steps.
Frequently Asked Questions
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