Bulk UUID & GUID Generator
Create standardized version 1, 4, or 5 Universally Unique Identifier tokens client-side offline.
100% Client-Side (No data leaves your device)
Generated UUID List
User Guide: UUID/GUID Specifications
What is a UUID?
A Universally Unique Identifier (UUID) or Globally Unique Identifier (GUID) is a 128-bit value designed to ensure globally unique identifiers without central coordination. The standards follow the RFC 4122 specifications.
UUID Versions Supported
- Version 4: 100% randomly generated from cryptographically strong values. Ideal for primary DB keys, session tokens, and general system records.
- Version 1: Generated from current timestamp, sequence count, and the system MAC address/node.
Version 5 (Namespace Hashing)
UUID v5 is generated by hashing a Namespace UUID and a Name string together via SHA-1. Rather than being random, v5 identifiers are deterministic: if you input the exact same namespace and name on any machine, it will output the exact same UUID. This is highly useful for mapping names to fixed lookup tokens.