A ROBLOX Username is the associated name with your account when you created it. This is required to login to your account, as well being the unique identifier of your account. No two players can have the same Username, and as such, is completely unique. A Display Name is how other players will see you in-game.
Using Email
Sign in to the account now
Go to account Settings. Browser - find t he gear-icon located at the upper-right corner of the site. Mobile Apps - find the three dots icon for More. Select the Account Info tab. Select the Change Username button (icon looks like a pencil and paper) Enter your new username. Enter your current Roblox password.
This was to prevent users from creating usernames of phone numbers and because Roblox was adding a login by phone number feature.
There are users on Roblox who will purposefully change their username to one format (see Username Trends above) in order to be recognizable.
Aside from name sniping, people often use username trends to make a unique name for themselves and still take the idea of name sniping or adding initials before a name. A list of popular name trends:
Players can select any available username of their choice upon creating an account and can later change it for 1,000 Robux. Usernames may have 3 to 20 characters, consisting of numbers, letters, and up to one underscore.
Underscores as the first or last character of the username
In 2020, Usernames are now hidden as long as you have a display name, your username will still be shown if you dont have a display name, however, this feature was removed sometime in October 2020 then re added back sometime in November 2020.
A feature released on October 22, 2013, allows users to voluntarily change their usernames for a 1,000 Robux fee. This feature was highly requested by the community on the forums ever since Roblox first released. All usernames that are changed must satisfy all username requirements and policies.
Original account creation date will carry over to your new username
On Roblox, you can change your account's username in the account settings. It costs Robux to make this change.
A user ID in Roblox is a unique identifier for every account in the game.
Tap on your profile icon on the top navigation bar to go to your Roblox profile.
Your user ID is the number in your profile URL.
On the other hand, if you’ve created your Roblox account using a username/email, you need to log in using your username/email.
After you’ve logged in, you’ll land on the homepage of Roblo x.
The number is located in between “users” and “profile”.
As mentioned in the guide, you can only get it if you’re using the browser version of Roblox.