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Permutation & Combination Calculator
Calculate permutations (nPr) and combinations (nCr). Find how many ways to arrange or choose items with or without repetition.
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Coming in the next update
This calculator is being added shortly. All formula logic is already implemented in the controller layer.
How to Use the Permutation & Combination Calculator
Enter your values above for an instant result. This tool uses verified formulas and is optimised for users in USA, Canada, UK, Australia. All calculations happen in your browser — your data is never sent to our servers.
Frequently Asked Questions
What is the difference between permutation and combination?
Permutation = order matters. Combination = order does not matter. ABC and BAC are different permutations but the same combination.