How to Use
- 1
Click Generate to create a new random UUID v4 string.
- 2
Toggle options for uppercase format or no-dash format (e.g., for database IDs that don't support hyphens).
- 3
Use Bulk Generate to create multiple UUIDs at once and copy them all with a single click.
Frequently Asked Questions
What is a UUID? ▼
A UUID (Universally Unique Identifier) is a 128-bit identifier standardized in RFC 4122. UUID v4 uses random numbers and is the most commonly used version - it looks like: 550e8400-e29b-41d4-a716-446655440000.
Can I generate multiple UUIDs? ▼
Yes. Use Bulk Generate to create a list of UUIDs at once. Options include uppercase, lowercase, and no-dash formats to match your system's requirements.
Are UUIDs truly unique? ▼
With 2^122 possible values (about 5.3 × 10^36), the probability of generating the same UUID v4 twice is astronomically small - effectively zero for any practical application, even at massive scale.