UUID Generator
Generate, validate, and inspect universally unique identifiers
Time-based
UUID V1
1131f910-6db2-11f1-9d3c-c9e5de64e6a3
Random
UUID V4
c93dafe1-06f7-4b12-aee5-3d8c25ca7002
Name-based
UUID V5
8a24817f-de98-5b10-ae4a-ded70882b53a
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.