Permutation and Combination Calculator
Find the number of arrangements and selections for n items taken r at a time.
- Free
- No signup
- Private: runs in your browser
- Works on mobile
Permutation and Combination Calculator tool
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Example
With the default values shown in the tool, the results look like this:
- Permutations nPr
- 720
- Combinations nCr
- 120
How to use Permutation and Combination Calculator
- Enter your values in the fields above.
- The result updates instantly as you type or change an option.
- Copy the result or note it down. Nothing is saved on our servers.
Why use DocConvertPRO?
- Free to use with no signup or watermark.
- Everything runs in your browser. Your input is not uploaded.
- Works on phones, tablets and computers.
- Made for Indian users: rupees, lakh/crore formats and local use cases.
About this tool
nPr = n! ÷ (n − r)!, nCr = n! ÷ (r! (n − r)!).
Frequently asked questions
Difference between P and C?
Permutations care about order; combinations do not.
Limits?
n up to 500.
What is 0!?
1.