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Roblox allows all users to change their Roblox account's display name in the account settings without spending a dime. Here's how to do it.
How much Robux to change your username? you need to have 1,000 Robux in your Roblox account. You can’t use same display name from another account or have the same username.
To change your Roblox username login to your account and go to the settings section. In a browser this is represented by the gear icon in the upper-right corner.
(Image credit: Roblox Corporation) To get or change a Roblox Display Name, you should first log in to your Account Info page under Settings, then select the edit button next to the Display Name ...
Make sure that you always change your birthday, even if it’s a wrong one, to 13 years of age or older to be able to change it at a later date. How to change your age on Roblox account (PC desktop)?
Follow these simple steps to change your display name: Go to the Account Info page on the official website. Press the screw icon on the top right-hand side of the screen.
Gamertag, username, display name; a Roblox player has multiple names, each having a purpose. Thankfully, usernames and display names chosen years ago can be changed.