You choose your username when you create your Roblox account, and you can change it once for free

Your Roblox username is the name other players see when you're in games or on the platform. You pick it during account creation, and Roblox lets you change it one time without paying. After that, each username change costs 1,000 Robux (Roblox's in-game currency). You cannot reclaim a username you've already used — once you change away from it, someone else can claim it.

The username you choose sticks with you across all Roblox games and shows up in chat, on your profile, and in friend lists. Because of that, it's worth thinking through before you settle on one. You don't have to get it perfect on the first try — you have one free change — but after that, changing costs money.

Key Takeaways

  • You create your username during account signup, and Roblox shows you whether it's available before you finish.
  • Your first username change is free; every change after that costs 1,000 Robux.
  • Usernames must be between 3 and 20 characters, can include letters and numbers, and cannot include spaces or special characters.
  • Once you change away from a username, you cannot get it back — another player can claim it instead.
  • You can change your username from your account settings on the Roblox website or mobile app.

What characters and lengths are allowed in a Roblox username

Roblox usernames must be between 3 and 20 characters long. You can use letters (A–Z, uppercase or lowercase), numbers (0–9), and underscores. You cannot use spaces, hyphens, periods, or other special characters. Roblox also blocks usernames that contain profanity or that it flags as inappropriate.

The underscore is the only punctuation mark allowed, so if you want to separate words, use underscores instead of spaces or hyphens. For example, "Player_One" works, but "Player One" or "Player-One" will be rejected. If you try a username and Roblox says it's unavailable or violates the rules, the system will tell you — you can then try a different combination.

How to create a username during account signup

When you sign up for Roblox on the website or mobile app, you'll reach a screen that asks for a username. Type in the name you want, and Roblox will check whether it's available. If it is, you'll see a green checkmark. If it's taken or violates the rules, you'll see a red X and a message explaining why.

You can keep trying different usernames until you find one that works. Once you pick one that's available and finish creating your account, that username is yours. You can then use your free one-time change later if you decide you want something different.

How to change your username for free

Your first username change is free and can be done anytime after you create your account. On the Roblox website, log in and go to your account settings. Look for the "Account Info" or "Username" section (the exact label varies depending on whether you're on desktop or mobile). Click the option to change your username, type in the new one you want, and confirm the change.

On the mobile app, tap your profile icon, go to Settings, then Account, and look for the username change option. The process is the same: type your new username, check that it's available, and confirm. Once you make this free change, your old username becomes available for other players to claim. If you want to change your username again after this, you'll need to spend 1,000 Robux.

What happens when you change your username

When you change your username, your old name is released when ready and can be claimed by another player. Your profile, friends list, and game history all stay the same — only the name changes. Any messages you sent before the change will still show your old username in chat history, but your current username will appear on your profile and in new messages.

If you change your mind about a username change, you cannot undo it. You would have to use your next change (paid or free, depending on how many you've used) to switch to something else. Because of this, take a moment to think through your new username before you confirm the change.

Tips for picking a username you'll keep

Since your first change is free but every change after costs Robux, it helps to think about what you want before you commit. Avoid usernames with numbers that might date quickly — "Player2024" will feel outdated in a few years. Steer clear of inside jokes or references that won't make sense to you later. A username that's straightforward, straightforward to spell, and that you won't get tired of is usually the safest bet.

If you're playing with friends, you don't need to coordinate usernames or use similar names — Roblox doesn't require that. Pick something that feels like you, that other players can remember and type easily, and that you won't regret seeing in your own chat messages. You can always use your free change if you decide differently after a few weeks of playing.

Frequently Asked Questions

Can I use my real name as my Roblox username?

Yes, as long as it doesn't violate Roblox's content policy. Many players use their real names or variations of them. Keep in mind that your username is visible to all other players, so consider your privacy comfort level before using your full real name.

What if the username I want is already taken?

Try adding numbers or underscores to make it unique — for example, "PlayerName_1" or "PlayerName123". You can also wait and check back later, though Roblox doesn't may provide that inactive accounts will free up their usernames. The quickest solution is to pick a variation that's available now.

Do I have to use my username as my display name?

No. Roblox lets you set a separate display name that other players see in games, while your username stays the same behind the scenes. You can change your display name more often and without cost, so if you want a different name to show in games, you can do that separately.

Can I get my old username back if someone else claims it?

No. Once you change away from a username, it becomes available to other players and you cannot reclaim it. If you regret changing, your only option is to pick a new username instead.

How much does it cost to change my username after the first time?

Each username change after your first free one costs 1,000 Robux. You earn Robux by playing certain games or purchase it with real money through the Roblox website or app.