UUID Generator
Generate cryptographically random version-4 UUIDs in bulk.
Generate one or many version-4 UUIDs using your browser’s cryptographic random source. Copy them all with a click. Nothing is transmitted.
255f692b-07cf-4c78-9905-5e5100353bce 1b183c53-3bba-4dff-b366-f641902d73fe 62af2eb9-5382-4a05-88ff-77e6f3f4212e 3dfa6d89-c0a2-40c6-8d5b-bca2c099f410 6aa37a3a-b085-4a87-b341-2a4ec81f3b6b
Version 4 UUIDs generated locally using your browser's cryptographic random source.
Formula & methodology
Uses crypto.randomUUID(), which produces RFC 4122 version-4 UUIDs.
Frequently asked questions
Are these unique?
Version-4 UUIDs have 122 random bits, making practical collisions effectively impossible.
Privacy
All processing happens locally in your browser. Your data is never uploaded.