The mechanics
Account Settings → Account Info → edit username: the change costs 100 Robux and takes effect immediately. Your friends list, items, groups and game stats all stay attached — only the handle changes. Your old username is reserved against reuse for a period, and the display name (a separate free-ish feature) can differ from the username.
Naming rules
Usernames are 3–20 characters, letters/numbers/single underscore, no spaces or symbols. The filter blocks personal information and flagged words. Display names (the friend-facing name) are more flexible and change free, so many players keep a stable username and iterate the display name instead — the smart move for creators whose brand lives in their username.
Creator brand advice
If you run games under a group, the group name is your brand and the personal username matters less. If your username IS your brand (game credits, socials), pick one you can say out loud on a stream and never need to re-buy — every rename is 100 Robux you did not spend on ads.
Sources and standards
Where these figures come from
Every formula on this page is implemented from the published reference material below. Where a value depends on a regional code, the calculator lets you override it rather than assuming one jurisdiction.
- Roblox Support — the official source for fees, groups, account and safety policies.
- Roblox Creator Documentation — engine and monetisation reference.
Figures, formulas and reference tables last verified: 19 September 2026.
