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UUID Generator

UUID(s)
c483af8d-3d06-427e-8814-dd1b937dd4c2

UUID v4 (Random): Generated using cryptographically secure random numbers.

Format: xxxxxxxx-xxxx-4xxx-yxxx-xxxxxxxxxxxx

About the uuid generator

Generate random version 4 UUIDs, one at a time or up to 100 at once. They come from the browser's crypto.randomUUID(), which uses a cryptographically secure random source.

How to use it

  1. Enter how many UUIDs you want (1 to 100).
  2. Click Generate, or + Add One to append a single new UUID.
  3. Copy one with its copy button, or use Copy all to get the whole list, one per line.

Questions

Can two v4 UUIDs ever collide?
In theory yes, but v4 UUIDs have 122 random bits, so the chance of a collision is negligible for any realistic number of IDs.
What is the difference between UUID v4 and v7?
v4 is fully random. v7 starts with a timestamp, so IDs sort by creation time, which is friendlier to database indexes. This tool generates v4.
Is a UUID the same as a GUID?
Yes. GUID is Microsoft's name for the same 128-bit identifier format.
Is it safe to use a UUID as a secret token?
A v4 UUID from a secure generator is hard to guess, but it was designed as an identifier, not a secret. For session or reset tokens, prefer a dedicated random token with more entropy.