UUID Generator

Create RFC 4122 version 4 UUIDs using the browser's cryptographic random source.

How many (1–50)

How this works

UUID Generator runs as plain JavaScript inside this page using the browser's own Web Crypto and text APIs. There is no request to our server when you press the button, so nothing you enter leaves your device.

Other tools

Password Generator
Random String Generator
Base64 Encoder / Decoder
JWT Decoder
URL Encoder / Decoder
Hash Generator
JSON Formatter

Need a throwaway inbox too?

The generator creates a disposable address instantly, with no signup.

Generate a temporary email