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Combinations & Permutations Calculator
nCr, nPr – with and without repetition.
120
Combinations C(n,k)
720
Permutations P(n,k)
220
Combinations with repetition
1,000
Permutations with repetition (nᵏ)
Runs entirely in your browser. Nothing is sent anywhere.
How it works
- 1Enter your values.
- 2See the result update instantly as you type.
- 3Change any value to compare scenarios.
About this tool
Combinations & Permutations Calculator: nCr, nPr – with and without repetition. Type your numbers and the result is calculated instantly — no button to press, nothing to install. All math runs locally in your browser, so the values you enter are never sent anywhere.
Example
| Input | |
|---|---|
| n (items to choose from) | 10 |
| k (items chosen) | 3 |
| Result | |
| Combinations C(n,k) | 120 |
| Permutations P(n,k) | 720 |
| Combinations with repetition | 220 |
| Permutations with repetition (nᵏ) | 1,000 |
How do I use the Combinations & Permutations Calculator?
Enter your values. See the result update instantly as you type. Change any value to compare scenarios.
Is the Combinations & Permutations Calculator free?
Yes. It is completely free with no sign-up, no usage limits and no watermark.
Is my data sent to a server?
No. Everything is calculated locally in your browser. Nothing you enter is uploaded, logged or stored.
Does it work on my phone?
Yes. It works in any modern browser on Android, iPhone, iPad, Windows, Mac and Linux — no app needed.