UUID / GUID Generator
Generate version-4 UUIDs (GUIDs) online. Bulk generation, copy with one click, runs in your browser.
About UUIDs
A UUID (Universally Unique Identifier, sometimes called a GUID on Microsoft platforms) is a 128-bit value designed to be unique across systems and time without coordination. The version-4 variant produced by this tool draws each ID from cryptographically secure randomness, giving 122 bits of entropy — enough that you would need to generate billions per second for centuries to expect a single collision.
How to use
Set the count (1-1000) and press Generate. The UUIDs appear as a
newline-separated list, ready to copy into your database, configuration file, or test
fixture. Generation uses crypto.randomUUID(), the platform's built-in CSPRNG.
Privacy
All values are generated locally in your browser and never logged or transmitted.