UUID Generator

Generate universally unique identifiers (UUIDs) for your applications. Perfect for database keys, session IDs, and unique references.

UUID Options

Configure your UUID generation settings

1 to 1,000 UUIDs

Completely random UUIDs

UUID Information

Version 4 (Random)

Completely random 128-bit identifiers. Most commonly used version.

Version 1 (Timestamp)

Based on timestamp and MAC address. Ensures uniqueness across time.

Format

xxxxxxxx-xxxx-Mxxx-Nxxx-xxxxxxxxxxxx

M = version, N = variant bits

Programming Examples

Click to copy code examples

Applications & Use Cases

UUIDs (Universally Unique Identifiers) provide a standardized way to generate unique identifiers that are virtually guaranteed to be unique across time and space without requiring a central authority.

Database Applications:

  • Primary keys for distributed databases
  • Foreign key references
  • Record identifiers across systems
  • Database migration utilities

Web Development:

  • Session identifiers
  • API request tracking
  • File upload naming
  • Cache keys

System Integration:

  • Message queue identifiers
  • Distributed system coordination
  • Service-to-service communication
  • Event tracking

Software Development:

  • Object instance identifiers
  • Configuration keys
  • Test data generation
  • Temporary file naming

Why Use UUIDs?

  • No central authority required for generation
  • Virtually guaranteed uniqueness
  • Can be generated offline
  • Suitable for distributed systems
  • Standardized format (RFC 4122)