UUID Generator
Generate RFC 4122 Version 4 UUIDs using crypto.randomUUID(). Bulk generation with one-click copy all.
Frequently Asked Questions
What is a UUID?
A UUID (Universally Unique Identifier) is a 128-bit label used to uniquely identify objects in systems. Version 4 UUIDs are randomly generated.
Are the UUIDs truly unique?
Yes — UUID v4 uses cryptographically secure randomness. The chance of collision is astronomically small (1 in 2^122).
What is the difference between UUID and GUID?
They are essentially the same thing. GUID is Microsoft's implementation of the UUID standard.
Can I use these in databases?
Yes — UUID v4 is widely supported as a primary key in SQL and NoSQL databases.