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UUID Generator

Generate, validate, and inspect universally unique identifiers

Time-based

UUID V1

d4cdfa50-3d9b-11f1-8dff-3bf8e40a59ad
Random

UUID V4

0a212fb2-7512-40f6-9122-438df4cfea3f
Name-based

UUID V5

60ffa5e9-067e-5e53-aa74-3e30494e675e

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.