UUID / GUID Generator

Generate universally unique identifiers for your applications. Supports v1, v4, and v5 variants.

UUID v1

Time-based UUID with timestamp and MAC address

Generated UUID v1

Click generate to create UUID v1

UUID v4

Random UUID - most commonly used variant

Generated UUID v4

Click generate to create UUID v4

UUID v5

Namespace and name-based UUID

Namespace UUID

Name

Generated UUID v5

Enter name and click generate

UUID Variants Explained

Generated using timestamp and MAC address. Guarantees uniqueness but may reveal information about when and where it was generated.

Generated using random numbers. Most commonly used variant. Provides good uniqueness with minimal information leakage.

Generated using a namespace UUID and a name. Same namespace and name will always produce the same UUID.

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