UUID / GUID Generator
Generate secure, completely random Version 4 UUIDs instantly in your browser. Perfect for database keys and unique identifiers.
What is a UUID (or GUID)?
A UUID (Universally Unique Identifier), also known in the Microsoft world as a GUID (Globally Unique Identifier), is a 128-bit label used to uniquely identify information in computer systems. Because there are so many possible combinations (2122 for version 4), you can generate them completely randomly without worrying about duplicates.
This generator strictly produces Version 4 UUIDs, which are generated using high-quality cryptographic randomness right inside your browser.
Frequently Asked Questions
Yes! We use the modern crypto.randomUUID() API built directly into your web browser. This uses a cryptographically secure pseudorandom number generator (CSPRNG) running on your local device.
Technically, yes, but practically, no. The chance of generating a duplicate Version 4 UUID is so astronomically small that you would need to generate 1 billion UUIDs every second for 85 years to reach a 50% chance of a single collision.
A standard UUID is composed of 32 hexadecimal characters broken up into five groups separated by hyphens, following this pattern: 8-4-4-4-12. E.g., 123e4567-e89b-12d3-a456-426614174000.