Once you’ve got the Robux, the following method is how you change your username:
Visit the Roblox website and log in
Head to the Settings menu
Click on the Account Info tab
Select the edit button next to your username
Enter your new username
Type in your account password
Press the Buy button to confirm your new username
How to change your username on Roblox?
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How to change display names in Roblox for free?
What else should I know about display name changes?
Your display name and username will be visible on Roblox and associated experiences
You can only change your display name one time every seven days.
Display names must follow Roblox Community Rules and terms of use or may be reset to your Username.
Other players may also have the same display name.
How do you change your Roblox username?
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.
Changing Your Username
On Roblox, you can change your account's username in the account settings. It costs Robux to make this change. However your Display Name is a free option to change how your name appears in an experience or game.
How do I change the username?
Log into your account
(If you can't log in, try these steps for recovering your password .)
Past Names
A list of previous usernames can be found on the Account Settings and Profile pages, along with People search. You can change back to a previous username, using the above method, which also costs Robux.