If you are the admin of a Facebook page and need your admin id for external applications, you can get your Admin-ID with the Graph-API_Exploarer of Facebook:
https://developers.facebook.com/tools/explorer/?method=GET&path=me%3Ffields%3Did%2Cname&version=v2.0
Steps
-
get an access-token for user_about_me
-
in GET-Input enter me?fields=id,name or just me
-
SUBMIT
Now you should see a JSON-Object-Dump in the result section:
{
"id": "668145793255539",
"first_name": "Rundella",
"gender": "female",
"last_name": "Capriola",
"link": "https://www.facebook.com/app_scoped_user_id/668145793255539/",
"locale": "de_DE",
"name": "Rundella Capriola",
"timezone": 2,
"updated_time": "2014-05-14T09:52:04+0000",
"verified": true
}
The ID-Key is your Admin ID.