UUID Generator
Generate random UUID v4 identifiers in bulk.
- No login
- No credit card
- 100% free
- Files never leave your device
Generate UUIDs (v4) online
Create one or many random version-4 UUIDs at once, then copy them with a single click. Options let you uppercase them or wrap each in braces, which some systems expect.
What is a UUID?
A UUID is a 128-bit identifier such as 550e8400-e29b-41d4-a716-446655440000. They're used as
database keys, request ids and file names because the chance of two colliding is astronomically small.
Are they secure?
These are generated with crypto.randomUUID(), your browser's cryptographically secure generator,
entirely on your device. Need a password instead? Try the
password generator.
Frequently asked questions
What is a UUID?
A UUID (Universally Unique Identifier) is a 128-bit random ID, like 550e8400-e29b-41d4-a716-446655440000, used to identify records without collisions.
Are these UUIDs random?
Yes — they are version 4 UUIDs generated with your browser’s cryptographically secure random generator.