What are the username rules on Roblox?

Roblox usernames must be between 3 and 20 characters, containing only letters, numbers, and a single underscore.

Can you have spaces in Roblox usernames?

No, spaces are not allowed in Roblox usernames.

If a name contains filtered words or numbers resembling personal contact info, it will be hashtagged.

It validates syntax compliance; availability must be checked on the official Roblox registration page.

Changing your primary account username costs exactly 1,000 Robux.

🤠

@Aesthetic_Username

Roblox profile header card simulation.

"Roblox is a place where you can make friends, build your dreams, and play with others." — David Baszucki

Roblox accounts require usernames to be between 3 and 20 characters in length.

The system allows letters, numbers, and exactly one underscore character.

Underscores cannot be placed at the start, end, or in consecutive succession.

💡 Pro Tip: Your display name can be changed every 7 days, but changing your username costs Robux!

"Life is a game, and Roblox is the sandbox." — Sandbox Legend

Roblox filters numbers that resemble private data or phone numbers, turning them into hashtags.

To avoid moderation blocks, write out numbers as words or combine dictionary words.

Check out discussions on the Roblox Subreddit Community Thread regarding name availability.

For official accounts, check updates on the Official Roblox Twitter Account.

"It's free to display, but choice is expensive." — Robloxian Pro

While display names are free, renaming your primary account username costs exactly 1,000 Robux.

Plan your target name carefully using our validator tools to avoid wasting Robux balance.