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UUID Generator

Generate, validate, and inspect universally unique identifiers

Time-based

UUID V1

462985a0-3d8f-11f1-a948-2751015ff3fd
Random

UUID V4

8c590b62-d330-49a5-8b13-1f4095972953
Name-based

UUID V5

b346129f-a89d-588b-a685-e9261cc9ae88

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.