Permutation & Combination Calculator
Calculate permutations (order matters) or combinations (order does not) of selecting r items from n.
Inputs explained
- n — The total number of items to choose from. Example: 10.
- r — How many items you select. Example: 3.
- P / C — Choose P for permutations (order matters) or C for combinations (order ignored).
How to use it
- Fill in the fields above — each input has a hint describing exactly what to enter
- Press Calculate to get your result instantly, right on this page
- Copy the result, save the tool to favorites, or share and embed it anywhere
Understanding the result
Example: Choosing 3 from 10: there are 720 permutations but only 120 combinations.
Frequently asked questions
Is the Permutation & Combination Calculator free to use? Yes — it is completely free, with no sign-up, no download and no usage limits. You can use it as often as you need.
Is my data private? Yes. The calculation runs entirely in your browser — the values you enter are never sent to our servers, stored or shared with anyone.
What information do I need? Just the following: n, r, P / C. Each field includes a hint explaining exactly what to enter.
Can I use it on my phone? Yes — the tool is fully responsive and works on any device, and the same calculator is available in the EasyWorkCalcs mobile app.
Privacy
Everything you enter into the Permutation & Combination Calculator is processed entirely in your browser. Nothing is uploaded, stored or shared — your data stays on your device.