UUID Generator
Generate cryptographically random v4 UUIDs, in bulk.
10 UUIDs
About UUID Generator
The UUID Generator creates cryptographically random v4 UUIDs in bulk, using your browser's built-in crypto.randomUUID(). Generate up to 1,000 at once and format them uppercase or without dashes.
How to use it
- Set how many UUIDs you want (up to 1,000).
- Toggle Uppercase or No dashes if you need a different format.
- Click Regenerate for a fresh batch.
- Copy all at once, download as a .txt file, or click any individual UUID to copy just that one.
Common use cases
- Seeding test data with unique identifiers
- Generating primary keys for a database migration
- Producing mock IDs for a prototype or demo
FAQ
Are these truly random?
Yes. They're standard v4 UUIDs generated with the browser's crypto.randomUUID(), which uses a cryptographically secure random source.
What's the maximum I can generate at once?
1,000 UUIDs per batch.
Is a UUID the same as a GUID?
Yes, for practical purposes — GUID is Microsoft's name for the same 128-bit identifier format as a UUID, so the v4 UUIDs generated here work as GUIDs too.