UUID 產生器

A Universally Unique Identifier (UUID) is a 128-bit number used to uniquely identify information in computer systems. They are designed to be generated independently without a central authority while maintaining a negligible probability of collision.

Select the UUID version (v1 for time-based, v4 for random) and the number of IDs you need. Click Generate to create a list of unique identifiers ready for use in your database or application.

Primary keys in distributed databases, session identifiers, transaction tracking, and naming temporary files or resources where uniqueness is critical across multiple systems.

UUID v4 is the most common choice for general-purpose unique IDs because it relies on high-quality randomness. Use v1 if you need to sort IDs by creation time.