Online UUID Generator - Version 6

UUID Version 6 is a variant of Version 1 that reorders timestamp bits to improve lexicographical sorting. It maintains uniqueness based on the timestamp, clock sequence, and device’s MAC address, while also providing improved indexability.

Pros:

• Sortability: Timestamp bits are arranged to allow UUIDs to be sorted chronologically, making it useful for ordered databases.
• Globally Unique: Similar to Version 1, it ensures uniqueness across different devices and over time.

Cons:

• Privacy Concerns: Like Version 1, it includes the device’s MAC address, which may raise privacy issues.
• Not Fully Random: Based on time and MAC address, which makes it predictable compared to fully random UUIDs.

Best for: Applications needing chronological sorting and unique identifiers in large-scale, distributed databases, especially where index performance is essential, but privacy is not a major concern.

Learn more about other UUID versions: Version 1, Version 3, Version 4, Version 5, Version 7 or go back to Online UUID Version 6 Generator