Roblox Username Generator
Roblox is strict about usernames: 3 to 20 characters, only letters and numbers, and one underscore at most (never first or last). Roblox also asks players not to use real names, so these ideas are built from words, never from personal details.
Tap a name to copy. ☆ saves it on this device.
Roblox username rules
- 3–20 characters.
- Letters and numbers, plus at most one underscore that is not first or last.
- No real names, phone numbers or addresses.
Reviewed Sep 2026 against Roblox help. The generator applies these rules automatically.
Found one you like? We can’t see whether it’s taken, and we won’t guess. Try it on Roblox’s official page; it tells you instantly.
Tips
- Do not put your real name, birthday or town in a Roblox username.
- Changing a Roblox username costs Robux, so pick one you will still like next year.
- Your display name can be changed more easily; keep the username simple.
FAQ
What are Roblox username rules?
3–20 characters, letters A–Z and numbers 0–9, and up to one underscore that is not at the start or end. No inappropriate words or personal information (Roblox Support, reviewed Sep 2026).
Why does Roblox reject my username?
It is taken, breaks the format above, or the filter flagged it. Paste it into our username checker to rule out format problems first.
Ask the name smith
Word banks are fast, but they don’t know you. Describe yourself or paste a name you’re unsure about, and our AI helper writes personal ideas or an honest review. It never checks availability and won’t write offensive or brand-impersonating names.
Up to 12 requests per 10 minutes. What you type is sent to our AI provider to answer, and not stored by us.