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UUID Generator

A UUID (Universally Unique Identifier) is used to generate a unique identifier. Each version has a different generation method and purpose.

UUID v4 (Random-based)

Completely randomly generated and widely used. The possibility of collision is extremely low.

Result: 00000000-0000-0000-0000-000000000000

UUID v7 (Sortable by Time)

Generated by combining a Unix timestamp with a random value. It is sortable by time and advantageous for database indexing.

Result: 00000000-0000-0000-0000-000000000000

UUID v1 (Time-based)

Generated based on the current time and MAC address. It is unique but may expose time information.

Result: 00000000-0000-0000-0000-000000000000

UUID v5 (Name-based, SHA-1)

Generated by converting a namespace and name string into an SHA-1 hash. It is more secure than v3.

Namespace: Name:

Result: 00000000-0000-0000-0000-000000000000

UUID v3 (Name-based, MD5)

Generated by converting a namespace and name string into an MD5 hash. It always produces the same result for the same input.

Namespace: Name:

Result: 00000000-0000-0000-0000-000000000000