Permutation Calculator
Calculate the number of ways to arrange r items from n items where order matters.
- Free Online Tool
- Instant Results
- Mobile Friendly
- No Installation
- Secure & Private
Understanding This Calculator
Permutation Formula (nPr)
Arrangements where order matters.
P(n, r) = n! / (n-r)!
Example 1
Arrange 3 items from 3 (n=3, r=3)
- 3! / 0! = 6 / 1 = 6
Example 2 (Race)
Assign Gold, Silver, Bronze to 8 runners (n=8, r=3)
- 8! / 5! = 8 × 7 × 6 = 336 ways
How to Use
- Enter total number of items.
- Enter how many to arrange.
Frequently Asked Questions
How do I use the Permutation Calculator (nPr)?
Enter your values in the input fields, and the result will appear instantly.
Is this calculator free to use?
Yes, this calculator is 100% free and does not require any registration or subscription.
Is it mobile-friendly?
Absolutely! Our tool is optimized for all devices, including mobile phones, tablets, and desktop computers.