UUID Generator
Random v4 UUIDs, in bulk.
Runs entirely in your browser — nothing you enter is uploaded, logged, or tracked.
Generate random version-4 UUIDs using your browser’s cryptographic random source — make one or a whole batch and copy them with a click.
Frequently asked questions
Are these UUIDs random and unique?
They’re version-4 UUIDs from crypto.randomUUID / getRandomValues — 122 bits of cryptographic randomness, so collisions are effectively impossible.
What’s the difference between a UUID and a GUID?
None meaningful — GUID is Microsoft’s name for the same 128-bit identifier. A v4 UUID is a valid GUID.