Wolfram Language & System 10.4 (2016)|Legacy Documentation

This is documentation for an earlier version of the Wolfram Language.View current documentation (Version 11.2)


creates a random, universally unique UUID string.

appends a UUID string to the specified base string.


  • CreateUUID[] gives a UUID based on a 128-bit number, formatted as 32 hexadecimal digits grouped in the format 8-4-4-4-12.
  • CreateUUID[] is intended to produce a globally unique string that will statistically never be repeated.
  • CreateUUID[] makes use of detailed local system and session information, as well as absolute time.
  • CreateUUID[] is intended to generate a random distribution of UUIDs.
  • Some Wolfram System features depend on assuming the UUIDs will not collide.
Introduced in 2014