🆔 UUID Generator

Generate UUID v4 (random) instantly in your browser. No server, no logging.

What is a UUID?

UUID v4 is randomly generated using a cryptographically secure random number generator. Collision probability is astronomically low, making them safe for use as unique identifiers in databases and distributed systems.

UUID v1 is time-based — it encodes the current timestamp. The v1 generated here is a simulation (uses random + timestamp) since true v1 requires a MAC address.

Nil UUID: 00000000-0000-0000-0000-000000000000 — used as a null value.