UUID Generator
Generate random UUIDs (v4) in bulk with one click
What is UUID Generator?
UUID Generator creates universally unique identifiers (UUIDs) following the v4 standard, which uses random numbers to produce IDs that are virtually guaranteed to be unique across all systems. UUIDs are 128-bit values formatted as 32 hexadecimal characters in 5 groups (e.g., 550e8400-e29b-41d4-a716-446655440000). They are the standard for database primary keys, API identifiers, and distributed systems.
How to Use This Tool
- Click Generate to create a new random UUID instantly
- Set the quantity to generate multiple UUIDs at once
- Click any UUID to copy it to your clipboard
- Use the Copy All button to copy the entire batch
Common Use Cases
- Generating primary keys for database records in PostgreSQL, MongoDB, etc.
- Creating unique session IDs or API tokens for web applications
- Assigning unique identifiers to files, uploads, or resources
- Generating correlation IDs for distributed microservice architectures
Frequently Asked Questions
Are these UUIDs truly unique?
Yes, UUID v4 uses cryptographically random numbers. The probability of generating two identical UUIDs is astronomically low — about 1 in 2^122 (5.3 x 10^36).
What is the difference between UUID and GUID?
They are the same thing. UUID (Universally Unique Identifier) is the standard term, while GUID (Globally Unique Identifier) is Microsoft's term. The format and function are identical.
Can I use these UUIDs in production?
Yes. The UUIDs are generated using your browser's crypto.getRandomValues() API, which is cryptographically secure and suitable for production use.