UUID Generator

Make unique IDs

Random v4 or time-ordered v7 UUIDs.

This all happens on your device. Nothing you type or add is sent anywhere. Check it yourself

v4 or v7?

v4 is fully random. v7 starts with the time it was made, so IDs sort in creation order, which keeps database indexes fast.

Are these generated on a server?

No. They're made in this tab from your device's secure random number generator.

How many can I make at once?

Up to 1,000 at a time. Type a number from 1 to 1,000 in the How many box, and a bigger number is cut back to 1,000.

About this tool

Runs	In your browser. Your files stay on your device.
Engine	crypto.getRandomValues (secure random)
Standard	RFC 9562: v4 random, v7 time-ordered
Works offline	Yes, once the page has loaded
Licence	AGPL-3.0
Added	27 September 2026
Built by	Sapience Design
Source	tools/developer/uuid-generator