Math calculators
Permutation Calculator
Compute how many ordered arrangements of r items from n (nPr).
nPr
720
How to use
- Enter n and r.
- Read nPr.
- Switch to combinations if order does not matter.
Features
- nPr formula
- Order matters
- Integer inputs
Privacy & how it works
This calculator runs entirely in your browser with JavaScript. Your inputs are not uploaded to ToolsWeb servers for this tool. Privacy Policy · Disclaimer.
FAQ
What is nPr when r = n?expand_more
It equals n! — all ordered arrangements of the full set.
Is this calculator free?expand_more
Yes. No signup required.
Are my numbers uploaded?expand_more
No. Calculations run in your browser. Inputs are not sent to ToolsWeb servers for this tool.
Is this professional advice?expand_more
No. Results are estimates for general information. See our Disclaimer for health, finance, and related tools.