How To Find Facebook Profile or Fan Page ID Number

if you completely forgot your Facebook Profile ID Number or FAcebook Fan Page  ID Number you did make short link for you Facebook profile url and for some reasons, you really need the number. This post will let you know how to find your Facebook profile ID Number.
From the beginning, you can get the number from your profile url by clicking click on the “Profile” tab in the upper right hand corner:
It’s something likes:

http://www.facebook.com/profile.php?id=100002842729936

So, if you forgot that number, the number which is highlighted above, you can get it from these ways:

Use Facebook Graph API

After logged in to your Facebook account, copy and paste the url below associate with your facebook username:
https://graph.facebook.com/your_user_name
Replace your_user_name with your current Facebook username, if you have already customize your Facebook Profile URL.
Example, my Facebook username is hoanhuynhtrong, so simply access the url below, after logged in successful – of cause, I will get my current number and maybe some extra information (name, first_name, last_name, link, gender, locale, …):
https://graph.facebook.com/prince.of.wah
Output:

{ "id": "100002842729936", "name": "χωέέτ χμππγ", "first_name": "χωέέτ", "last_name": "χμππγ", "link": "https://www.facebook.com/pRince.of.wAh", "username": "pRince.of.wAh", "gender": "male", "locale": "en_US" }

The responses are in JSON format but it’s easy for us to find current Facebook ID is:

100002842729936.