Knowing Facebook unique ID number (for pages as well as profiles) can be useful in certain cases like when trying to setup a website widget or configure plug-ins and so on.
Here is a quick and easy way get this ID (which is a unique number) :
Simply go to the Facebook ID tool and enter the profile link, then hit “Lookup numeric ID” :
The ID will show up.
This tool works for individual Facebook profiles as well as for Facebook pages and is simple to use.
Happy Facebooking!