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UUID Generator

Generate, validate, and inspect universally unique identifiers

Time-based

UUID V1

ae8edbc0-6da7-11f1-8580-718ac436200e
Random

UUID V4

b0ca2aed-1338-4e51-9d33-1b8c9ed2e09a
Name-based

UUID V5

07e1a65a-341c-52a1-838f-ffab4190a730

Batch Generator

Version

UUID Validator

Paste a UUID to check if it's valid and identify its version.

UUID Versions Explained

Version 1

Uses the current timestamp and MAC address. Guarantees uniqueness but may expose hardware identity.

Version 4

Purely random. The most commonly used version — simple, private, and virtually zero collision probability.

Version 5

Derived from a namespace + name using SHA-1. Deterministic: the same inputs always produce the same UUID.