Important note
If you have a custom username and your URL shows facebook.com/yourusername , you can use an online translator tool. find my fbid
: If you are looking for a security code rather than an ID, use the Code Generator within the "Settings & privacy" menu of the Facebook app. Important note If you have a custom username
Always remember: Your FBID is a key piece of data for interacting with Facebook’s backend. Use it wisely, keep it secure (especially if you are a developer), and never share it with untrusted services. find my fbid