UUID Generator

Generate random UUIDs (Universally Unique Identifiers) version 4. UUIDs are 128-bit identifiers that are unique across time and space.

What is UUID?

UUID (Universally Unique Identifier) is a 128-bit identifier that is unique across all devices and time. UUID v4 uses random numbers to generate identifiers with an extremely low probability of collision.

UUID Format

Standard UUID format: xxxxxxxx-xxxx-4xxx-yxxx-xxxxxxxxxxxx

  • 32 hexadecimal characters
  • 4 hyphens separating into 5 groups
  • The "4" indicates version 4
  • y is one of 8, 9, a, or b

Use Cases

  • Database primary keys
  • Session identifiers
  • File names and IDs
  • Distributed systems

Keyboard Shortcuts

  • Ctrl + L - Focus output area
  • Space - Generate UUIDs
  • Ctrl + Enter - Generate UUIDs
  • ↑ / ↓ - Adjust UUID count
  • Ctrl + Shift + C - Copy result
  • Ctrl + S - Download UUIDs
  • Escape - Clear output
  • Double-click output area - Select all text