Math calculators
Combination Calculator
Compute how many ways to choose r items from n when order does not matter (nCr).
nCr
120
How to use
- Enter n and r.
- Read nCr.
- Use permutations if order matters.
Features
- nCr formula
- Order does not matter
- Guards for large n
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
When do I use combinations vs permutations?expand_more
Combinations ignore order (teams). Permutations care about order (rankings).
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.