π UUID Generator
Version 4 universally unique identifiers β generate one, or a whole batch for seeding data.
How to use
- Enter how many UUIDs you need (up to 500).
- Optionally tick uppercase or braces formatting.
- Click Generate, then Copy all.
FAQs
What is a UUID?
A Universally Unique Identifier is a 128-bit label like 3f6a8c1e-9b2d-4f5a-8c7d-1e2a3b4c5d6e, commonly used as database keys, request IDs and filenames where collisions must be practically impossible.
What does "version 4" mean?
Version 4 UUIDs are generated from random numbers (122 random bits), unlike version 1 which embeds a timestamp and MAC address. They're the most common choice for general use.
Can two UUIDs collide?
In theory yes, in practice no β with 122 random bits you'd need to generate billions per second for a century before a collision becomes likely.