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UUID GENERATOR

UUID Generator

Generate unique identifiers (UUID v4) for your applications

About UUIDs

What is UUID?

UUID (Universally Unique Identifier) is a 128-bit identifier that is unique across both space and time, with very low probability of duplication.

UUID v4

Version 4 UUIDs are generated using random or pseudo-random numbers. They have the format: xxxxxxxx-xxxx-4xxx-yxxx-xxxxxxxxxxxx.

Use Cases

Database primary keys, session IDs, file names, API keys, and any scenario requiring unique identifiers.

Technical Details

  • Length: 36 characters (including hyphens) or 32 hex characters
  • Format: 8-4-4-4-12 hexadecimal digits
  • Uniqueness: Practically guaranteed to be unique
  • Randomness: 122 bits of randomness in UUID v4