GUID/UUID Generator

Generate Globally Unique Identifiers (GUIDs) or Universally Unique Identifiers (UUIDs) in various formats

Generation Options

UUID Version

Quantity

Format

Standard xxxxxxxx-xxxx-4xxx-yxxx-xxxxxxxxxxxx
Braces {xxxxxxxx-xxxx-4xxx-yxxx-xxxxxxxxxxxx}
No Hyphens xxxxxxxxxxxx4xxxyxxxxxxxxxxxxxxx
URN urn:uuid:xxxxxxxx-xxxx-4xxx-yxxx-xxxxxxxxxxxx
Base64 Base64 encoded

Uppercase

Generated GUIDs

No GUIDs generated yet. Click "Generate GUIDs" to create some.

How to use this GUID Generator:

  • Select the UUID version you want to generate
  • Choose how many GUIDs you need (1-100)
  • Select your preferred output format
  • Optionally check "Uppercase" for uppercase letters
  • Click Generate GUIDs to create your identifiers
  • Use the action buttons to copy or download your GUIDs

About GUIDs/UUIDs:

  • Version 4 (Random): Most common, randomly generated
  • Version 1 (Time-based): Based on timestamp and MAC address
  • Nil UUID: Special case of all zeros (00000000-0000-0000-0000-000000000000)
  • GUIDs are 128-bit numbers that are extremely unlikely to duplicate
  • Used for database keys, distributed systems, and unique identifiers

All GUID generation happens in your browser - we never store or transmit your data