UUID Generator
e1ee3e66-6082-436a-aad8-d2e7740a7dddAbout UUID Generator
UUIDs (Universally Unique Identifiers) are 128-bit identifiers designed to be unique across all devices and time without requiring a central registration authority. This tool generates UUID version 4 (UUIDv4), which uses cryptographically secure random numbers to create identifiers with an extremely low probability of collision.
Our UUID generator uses the browser's built-in crypto.randomUUID() API, ensuring high-quality random number generation for secure and reliable identifiers. The standard UUID format consists of 32 hexadecimal digits displayed in five groups separated by hyphens: 8-4-4-4-12 characters.
UUIDs are essential in distributed systems where multiple nodes need to generate unique identifiers without coordination. They are commonly used as database primary keys, session tokens, correlation IDs for logging, and resource identifiers in APIs. Unlike sequential IDs, UUIDs do not reveal information about record counts or creation order.
This tool supports bulk generation of up to 50 UUIDs at once, making it convenient for testing, seeding databases, or generating multiple identifiers quickly. You can toggle between uppercase and lowercase formats depending on your preference or system requirements. All processing happens locally in your browser, ensuring your generated UUIDs remain private.