UUID Generator
Random v4 UUIDs in bulk.
- 100% free
- No sign-up
- Runs in your browser
Unique IDs on demand
UUIDs are 128-bit identifiers you can create anywhere without a central database and still be confident they're unique. Version 4 UUIDs are random.
Generate one for a quick test or a thousand for seeding a database.
- 1
Set how many
Up to 1,000.
- 2
Choose formatting
Hyphens and case.
- 3
Copy or download
As a text file.
Frequently asked questions
Can two UUIDs ever clash?
In theory, but you'd need to generate billions per second for decades before it became likely.
Is a GUID the same as a UUID?
Yes — GUID is Microsoft's name for the same standard.
Is my data uploaded anywhere?
No. Everything runs in your browser with JavaScript — nothing you type or open is sent to our servers.