UUID Generator
Generate random UUID v4 identifiers
About UUID Generator
Generate random UUIDs (v4) instantly. Create single or bulk UUIDs for databases, APIs, and testing. Uses the Web Crypto API for cryptographically secure random values.
Privacy First
All processing happens entirely in your browser. No data is sent to any server, and nothing is stored. Your input stays on your device.
FAQ
What is a UUID?
A UUID (Universally Unique Identifier) is a 128-bit identifier that is unique across all space and time. Version 4 UUIDs are randomly generated using cryptographically secure random numbers.
What is the probability of UUID collision?
The probability of generating two identical UUIDs is astronomically low — about 1 in 5.3 × 10^36. You would need to generate 1 billion UUIDs per second for 85 years to have a 50% chance of a collision.