UUID Generator

Generate random UUIDs (v4) for your applications and databases.

Quantity:

Format:

Without dashes

With braces {uuid}

Generated UUID

Bulk UUIDs

About UUIDs

A UUID (Universally Unique Identifier) is a 128-bit identifier that is unique across space and time. Also known as GUID (Globally Unique Identifier) in Microsoft systems.

UUID Format

A UUID is displayed as 32 hexadecimal digits in 5 groups separated by hyphens:


        xxxxxxxx-xxxx-4xxx-yxxx-xxxxxxxxxxxx

The "4" indicates version 4 (random), and "y" is one of 8, 9, A, or B.

Common Uses

Database primary keys
Session identifiers
Distributed systems identification
File naming
Transaction IDs