UUID Generator

Generate UUIDs instantly

Create UUID v4, v1, and custom UUIDs for your applications

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UUID Generator

Generate UUIDs instantly

Tips

• UUID v4 uses random numbers and is most commonly used
• UUID v1 includes timestamp and MAC address information
• UUIDs are 128-bit identifiers guaranteed to be unique
• Use UUIDs for distributed systems and unique identifiers

UUIDs (Universally Unique Identifiers) are 128-bit identifiers that are guaranteed to be unique across time and space. Version 4 uses random numbers, while Version 1 includes timestamp and MAC address information.

Did You Know?

UUIDs were standardized by the Open Software Foundation (OSF) as part of the Distributed Computing Environment (DCE) in the 1990s.

A UUID v4 has 2^122 possible values (approximately 5.3 × 10^36), making collisions virtually impossible.

UUIDs are commonly used in databases, distributed systems, and APIs to ensure unique identifiers without central coordination.

These facts help provide context and educational value about the tool's purpose and history.