UUID GUID Generator Online

Generate Universally Unique Identifiers (UUIDs) and Globally Unique Identifiers (GUIDs) in various formats and versions for your applications.

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Generated: 0 UUIDs

About UUIDs / GUIDs

What are UUIDs?

A UUID (Universally Unique Identifier) is a 128-bit identifier used to uniquely identify information in computer systems. GUIDs are Microsoft's implementation of UUIDs.

UUID Versions

  • • Version 1: Timestamp-based
  • • Version 4: Random or pseudo-random
  • • NIL: All zeros (special case)
  • • MAX: All ones (special case)

Common Use Cases

  • • Database primary keys
  • • API request tracking
  • • Session identifiers
  • • File naming
  • • Distributed systems

Features

  • • Multiple UUID versions
  • • Various output formats
  • • Bulk generation (1-100)
  • • Copy to clipboard
  • • Download results
  • • Real-time generation