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Generate random version 4 UUIDs for database keys, test fixtures, and correlation IDs. Generate one or many and copy in a list.

UUID generator

Version 4 UUIDs using crypto-grade randomness.

  • d8797a5c-1bd7-459c-8b80-f70b60752900
  • 08fbae7c-14a6-4dea-ad02-c1d7b4d61c3f
  • f7bf386d-6e6d-4b6d-8051-8c1b72a28564

How to use UUID generator

  1. Choose how many UUIDs you need.
  2. Click generate.
  3. Copy a single ID or the full list into your app or SQL script.

Example: f47ac10b-58cc-4372-a567-0e02b2c3d479 is a typical v4 UUID shape.

Frequently asked questions

Are version 4 UUIDs unique enough?
Yes. They contain 122 random bits, so the chance of a collision is negligible for virtually any real-world application.
Can I use UUIDs as database keys?
Yes, they are common as primary keys, though sequential IDs can index faster. Choose based on your scale and access patterns.

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