Related Tools
UUID online generator, guid online generator tool (GUID is a term for UUID by Microsoft). Support the generation of UUIDs for version 1 and version 4 algorithms. Version4 UUID is generally used.
UUID online generator, supports generating multiple versions of UUIDs, supports batch generation of UUIDs, and supports downloading to file.
- Version : Select the generated UUID version. This tool supports generating UUIDs for Version 1, Version 3, Version 4, Version 5, Version 6, and Version 7.
- Count : Fill in the number of UUIDs generated, with a range of [1,1000000].
- Format : Select the format for UUID results, supporting string, hex, binary, and base64 formats.
- UUID Wiki .
- UUID is a concept proposed by the international organization for Standardization (ISO). UUID is a 128 bit value, which can be calculated by a certain algorithm. UUID is used to identify the attribute type and is regarded as a unique identifier in all space and time. Generally speaking, this value can be guaranteed to be truly unique, That is, any UUID generated anywhere will not have the same value.
- UUID Version 1: time-based UUID, which is obtained by calculating the current timestamp, random number and machine MAC address.
- UUID Version 2 : RFC 9562 reserves version 2 for "DCE security" UUIDs; but it does not provide any details. For this reason, many UUID implementations omit version 2. However, the specification of version-2 UUIDs is provided by the DCE 1.1 Authentication and Security Services specification.
- UUID Version 3 : Generate UUID based on namespace and name, using MD5 hash algorithm. For a given namespace and name, the generated UUID is a fixed value.
- UUID Version 4: Random UUID, which generates UUID according to random number or pseudo-random number.
- UUID Version 5 : Generate UUID based on namespace and name, using SHA1 hash algorithm. For a given namespace and name, the generated UUID is a fixed value.
- UUID Version 6 : Based on time, UUID is obtained by calculating the current timestamp, random number, and machine MAC address.
- UUID Version 7 : Based on timestamp and random number generation, suitable for high load databases and distributed systems.
- UUID Version 8 : User defined UUID generation.
