What is the UUID Generator?
Generate RFC-4122 version 4 UUIDs. The UUID Generator is a free online tool that works instantly in your browser — no installation, no signup and nothing to upload. It sits alongside other Developer tools on DevNibble such as JWT Decoder, Regex Tester, Timestamp Converter.
How to use the UUID Generator
- Choose the options you want.
- Click Generate to create your output.
- Copy or download the results.
Features
- Runs 100% in your browser — your data is never uploaded or stored.
- Free forever, with no account, no ads and no tracking.
- Copy or download your result in one click.
- Fast and responsive on desktop, tablet and mobile.
Frequently asked questions
Which UUID version is generated?
Random RFC-4122 version 4 UUIDs, using the browser's cryptographically-secure random generator.
Are the UUIDs unique?
Version 4 UUIDs have 122 random bits, so collisions are astronomically unlikely.