UUID generator
Many v4 UUIDs at once
Generated UUIDs
What you enter is never sent to a server. Everything is processed in your browser on this device.
How to use
- One UUID is ready as soon as the page opens.
- For more, enter a Count from 1 to 1000 and press Generate.
- Turn on Uppercase or Remove hyphens if needed. They apply to the current list right away.
- Copy the list or save it with Download (.txt). Each UUID is on its own line.
FAQ
Which UUID version does it generate?
Version 4, which is built from random values. It uses the browser’s crypto.randomUUID, and where that isn’t available, crypto.getRandomValues with the same v4 layout.
Can two UUIDs ever collide?
A v4 UUID has 122 random bits, so a collision isn’t a practical concern. They come from a cryptographic random source, but they aren’t checked against values already in use elsewhere.
Can I generate v1 or v7 UUIDs?
No. If you need time-ordered v7 IDs or v1 IDs that contain a timestamp, generate them with a library in your language or database.
How do I get a UUID without hyphens?
Turn on Remove hyphens to get a 32-character value like 550e8400e29b41d4a716446655440000. You can combine it with Uppercase, and both settings are remembered for next time.
How many can I generate at once?
Up to 1000 per click. Numbers outside 1–1000 are adjusted to fit. Generate again if you need more. The downloaded file is named kitvoo-uuid.txt.