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UUID Versions Compared

Simple table of UUID versions, example values, and what each version is used for.

8 versions listed
VersionExample UUIDDescription
v1 f81d4fae-7dec-11d0-a765-00a0c91e6bf6 Time-based UUID using a timestamp and node identifier.
v2 000003e8-7dec-21d0-a765-00a0c91e6bf6 DCE Security UUID that includes POSIX UID/GID details.
v3 3d813cbb-47fb-32ba-91df-831e1593ac29 Name-based UUID generated with MD5 hashing.
v4 550e8400-e29b-41d4-a716-446655440000 Random UUID generated from pseudo-random or cryptographic randomness.
v5 2ed6657d-e927-568b-95e1-2665a8aea6a2 Name-based UUID generated with SHA-1 hashing.
v6 1ec9414c-232a-6b00-b3c8-9e6bdeced846 Reordered time-based UUID designed for improved database locality.
v7 01890f26-0bcd-7f3a-b2b4-53a3b6936f52 Unix-time-ordered UUID using millisecond timestamp plus randomness.
v8 2489e9ad-2ee2-8e00-8ec9-32d5f69181c0 Custom UUID format reserved for experimental or vendor-defined layouts.

About this tool

UUID Versions helps developers, QA engineers, technical writers, and support teams review a simple table listing UUID versions, example UUID values, and descriptions. Use it during debugging sessions, documentation updates, code reviews, and integration tests when you need a focused result you can read, copy, or share without opening a heavier application.

Use cases

  • Use UUID Versions during debugging when you need to review a simple table listing UUID versions, example UUID values, and descriptions without leaving the browser.
  • Copy UUID Versions output into tickets, docs, test notes, spreadsheets, or chat threads so teammates can verify the same result.
  • Keep UUID Versions open as a repeatable browser utility for quick checks instead of building a one-off spreadsheet or script.

FAQ

What is UUID Versions best used for?

UUID Versions is best used when you need to review a simple table listing UUID versions, example UUID values, and descriptions in a fast, copy-friendly browser workflow.

Who benefits most from the UUID Versions tool?

It is especially helpful for developers, QA engineers, technical writers, and support teams who handle debugging sessions, documentation updates, code reviews, and integration tests, and need clear output without extra setup.

Can I use UUID Versions results in documentation or bug reports?

Yes. The output is designed to be readable and easy to paste into issues, docs, QA notes, or team conversations.