Changing your in-game username does not change your Minecraft website profile name.

If you’re already logged in, skip this step and the next two steps.

If the username is already taken, you’ll see a red “username is in use” message appear. If so, try a different username, or try spelling your selected username differently, and then click Check availability again.

After a successful name change, you won’t be able to change your name for another 30 days. Your old username will be available for 7 days, meaning that you’ll have a week to change your new username back to your old one if you decide to do so.