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UUID Generator

Generate random UUIDs (v4) in bulk. Supports uppercase, no-dash formats.

Click "Generate UUIDs" to create random UUIDs

About UUID v4

UUID (Universally Unique Identifier) v4 generates random 128-bit identifiers. With 122 random bits, the probability of a collision is astronomically low. UUIDs are commonly used as database primary keys, session tokens, and distributed system identifiers.

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How to Use

  1. Set the number of UUIDs to generate (1-20)
  2. Choose options: uppercase, no dashes
  3. Click 'Generate UUIDs'
  4. Click on any UUID to copy, or use 'Copy All'

Common Use Cases

  • Database primary keys
  • API resource identifiers
  • Distributed system identifiers
  • Session and correlation IDs

Frequently Asked Questions

What is a UUID?
UUID (Universally Unique Identifier) is a 128-bit number used to uniquely identify information. Version 4 UUIDs are randomly generated, making collision probability astronomically low.
Are UUIDs truly unique?
While not mathematically guaranteed, UUID v4 has 2^122 possible values. The probability of generating a duplicate is essentially zero for practical purposes.
When should I use UUIDs?
Use UUIDs as database primary keys, API resource identifiers, session tokens, or any time you need a unique identifier without a central authority.