Finding the raw numerical ID on the Facebook app is more difficult, as the app prioritizes usernames. However, you can use the mobile browser method:
Your Facebook ID is a permanent, numeric key to your digital identity on the platform. Whether you need it for app support, analytics, business management, or just for personal reference, finding it is easy with the right approach.
If none of the above methods work for you, you can try using a third-party tool:
Finding your (FBID) is simple, though the exact method depends on whether you're looking for your personal profile ID, a business page ID, or an ID for a specific app. 1. Find Your Personal Profile ID Every user has a unique numeric ID.