UUIDTools.com

Minecraft UUID Generator

Random. 122 random bits. The default choice for most apps.

Decode
Options & format

Formatting is applied instantly in your browser. A GUID is a UUID: tick Uppercase + Braces for the Microsoft registry style.

API
http://uuidtools.com/api/generate/v4

Plain-text and JSON API docs: no key required.

About Version 4 UUIDs

Minecraft identifies players, entities and other objects with UUIDs. Random IDs are version 4. Servers running in offline mode derive a player's UUID by MD5-hashing the text "OfflinePlayer:<username>" (Java's UUID.nameUUIDFromBytes), giving a version 3 UUID that stays the same on every offline server.

Use the generator for random Minecraft-compatible UUIDs. Offline-mode UUIDs hash the name without any namespace UUID, so the namespace-based v3 generator cannot reproduce them.

Frequently asked questions

Which UUID version does Minecraft use?

Online players and entities use random version 4 UUIDs. Offline-mode player UUIDs are version 3 (MD5 of "OfflinePlayer:" plus the name, with no namespace).