SHA1 Generator Generator

UUID Generator

Generate unique identifiers (UUIDs) instantly. Create UUID v1, v4, and v7 for databases, APIs, and applications. Secure, fast, and completely free.

1
About UUID Generator

A UUID (Universally Unique Identifier) is a 128-bit identifier used to uniquely identify information in computer systems. UUIDs are widely used in databases, APIs, and distributed systems to ensure unique identification without central coordination.

UUID v1

Based on timestamp and MAC address. Provides temporal ordering but may reveal system information.

UUID v4

Randomly generated. Most commonly used version with excellent uniqueness and no information leakage.

UUID v7

Timestamp-based with random component. Provides temporal ordering while maintaining randomness.

Common Use Cases:

  • Database primary keys and foreign keys
  • API request and session identifiers
  • File and document unique naming
  • Distributed system coordination
  • Transaction and event tracking