FREE UUID GENERATOR

UUIDGEN – UUID Generator

Generate RFC 4122 compliant UUIDs in bulk. UUID v4 random or v1 time-based — copy, export as JSON/TXT, choose format instantly.

Single UUID

—

Bulk Generator

Format: Standard {braces} URN JSON array

122 random bits with RFC 4122 variant bits. The most common UUID format — ideal for database primary keys.

Contains a timestamp and node identifier. Sortable by creation time but exposes machine info.

GUID (Globally Unique Identifier) is Microsoft's implementation of the UUID standard. They are functionally identical.

UUID v4 has a collision probability of 1 in 2¹²² — effectively impossible to collide in practice.