Open the Facebook profile, page, or group
Check the profile or page URL for a numeric ID
View the page source and search for “profile_id” or “entity_id”
Use Facebook’s “About” section for public page details
Use the Graph API if you have access and permissions
Use a third-party Facebook ID lookup tool
Check the username link if the profile uses a custom URL
Inspect the page with browser developer tools
Search the account name in Facebook search and open the correct profile
Ask the account owner to share their Facebook ID