UUID Generator
Generate one or many random UUIDs (v4) instantly in your browser.
All conversions happen in your browser. No data is sent to our servers - see why that matters. Share links encode your input in the URL itself; nothing is stored on a server. Press Cmd/Ctrl + Enter to convert.
How to Generate UUIDs
Enter how many UUIDs you need (up to 1000) and click Generate. Each UUID appears on its own line so you can copy them all at once or download them as a file.
What is a UUID?
A UUID (Universally Unique Identifier, also called GUID) is a 128-bit identifier written as 36 characters, like 550e8400-e29b-41d4-a716-446655440000. UUIDs let distributed systems create identifiers independently without coordination or collisions.
Common Use Cases
Developers use UUIDs as database primary keys, API request IDs, session tokens, file names, and correlation IDs in logs - anywhere an identifier must be unique across machines without a central counter.
Frequently Asked Questions
What version of UUID does this generate?
The generator creates version 4 (random) UUIDs using your browser's crypto.randomUUID API, which is backed by a cryptographically secure random number generator.
Are the UUIDs really unique?
UUID v4 has 122 bits of randomness, so the chance of generating the same UUID twice is astronomically small - you would need to generate billions of UUIDs per second for decades to have a meaningful collision risk.
Can I generate UUIDs in bulk?
Yes. Enter any number from 1 to 1000 and the tool generates that many UUIDs, one per line, ready to copy or download.
Are the generated UUIDs sent to a server?
No. UUIDs are generated entirely in your browser and never transmitted anywhere, so they are safe to use as database keys or secrets in your projects.