Random GUID Generator
Generate RFC 4122 v4 GUIDs/UUIDs instantly.
100% private, runs in your browser
Generates RFC 4122 v4 UUIDs using crypto.randomUUID(), entirely in your browser.
What is Random GUID Generator?
Generates standards-compliant version-4 GUIDs (also called UUIDs) using your browser's built-in crypto.randomUUID() — the same cryptographically secure random source used by Node.js and modern databases, not a hand-rolled approximation.
FAQ
They're the same thing — GUID is Microsoft's name for what the rest of the industry calls a UUID, both referring to the same 128-bit identifier format.
Astronomically: a version-4 UUID has 122 random bits, so generating a billion per second for a hundred years would still leave the chance of any collision below 50%.