ValueGameNode
Search Console shows “minecraft username to uuid” and “minecraft uuid to name” with impressions and almost no clicks. Both jobs are the same form: the Minecraft UUID to username converter. Paste a name or a UUID. You get the other side, in dashed and trimmed form.
Why plugins store a UUID
A Java account can change its username. The UUID stays. Whitelists, bans, and economy plugins that key on the name will lose the player after a rename. Key on the UUID and the row survives. That is the whole point of the lookup.
Bedrock uses a different id space. This tool talks to Mojang’s Java profile API. Do not paste a Bedrock XUID and expect a Java name.
Username to UUID
- Open the UUID converter.
- Paste a Java username (1–16 characters, letters, numbers, underscore).
- Convert. You get the current name (capitalisation from Mojang), a dashed UUID, and a 32-character undashed UUID.
Use the dashed form in most plugin configs. Use the undashed form when a file or API asks for 32 hex with no hyphens.
UUID to username
Paste either UUID shape. The session server returns the name currently attached to that id. If the player renamed last week, you see the new name, not the one on an old screenshot.
A miss usually means the name was never used, Mojang is slow, or the UUID came from an offline-mode server. Offline-mode invents its own ids. Those do not resolve on Mojang. Online-mode Java servers use the real ones.
Where this sits next to hosting
Looking someone up does not start a server. If you are building a whitelist before launch, generate the JSON with the whitelist creator after you have the UUIDs. First-time setup is in what you actually need. Plans stay on the Minecraft page. A raw machine is /vps/.