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.