UUID v1 Generator
A time-based UUID generated using timestamp and MAC address, containing time-series order information. Suitable for logging, event tracking, and applications requiring time-series order.
Here are the generated UUID NIL results
Enter the quantity and click "Generate" to batch create UUID NIL
Nil UUID is a special all-zero UUID (00000000-0000-0000-0000-000000000000), compliant with the UUID standard, but it is not randomly generated and has no time-sequence meaning.
It is used to represent a null, uninitialized, or unspecified value, serving as a default special state in databases or systems. In APIs and data exchanges, using Nil UUID avoids null or empty strings, ensuring proper UUID format.
UUID v1 Generator
A time-based UUID generated using timestamp and MAC address, containing time-series order information. Suitable for logging, event tracking, and applications requiring time-series order.
UUID v4 Generator
A UUID generated using random numbers, with global uniqueness and no identifiable information. The most commonly used type, suitable for API keys, session IDs, and secure identifiers.
UUID v7 Generator
A modern timestamp-based UUID standard combining time-series order and randomness, providing better database indexing performance for distributed systems.
Online UUID Generator Tool
A UUID is a universally unique identifier generated from completely random numbers, with an extremely low chance of duplication, ensuring near-global uniqueness.