Roblox Username Availability
A Roblox name change costs 1,000 Robux and the site only tells you a name is taken after you've gone through the flow. Check here first.
Roblox username rules
- Between 3 and 20 characters.
- Letters, numbers, and at most one underscore.
- The underscore can't be the first or last character.
- No spaces, and no other punctuation.
- Names released by deleted accounts are not recycled — taken is usually forever.
One thing this checker can't tell you: Roblox also blocks names its filter considers inappropriate, even when nobody holds them. A name can show as available here and still be rejected at the point of change.
Checking one account is a snapshot. RoGuard watches continuously.
RoGuard tracks your child's Roblox account around the clock — every game they play, every new friend, every bio change — and emails you when something looks wrong.