Random UUID Generator
Generate random UUIDs (Universally Unique Identifiers) in various formats for software development, testing, and unique identification.
Generated UUIDs
Configure UUID generation parameters and formats
Generation Settings
Output Format
550e8400-e29b-41d4-a716-446655440000
Advanced Options
What is a UUID?
A UUID (Universally Unique Identifier) is a 128-bit identifier that is unique across both space and time. UUIDs are used in software development to identify objects, records, or entities without requiring central coordination.
UUID Structure
A standard UUID is displayed as 32 hexadecimal digits, displayed in five groups separated by hyphens: 8-4-4-4-12 (36 characters total including hyphens).
When to Use UUIDs
UUIDs are ideal when you need unique identifiers without central coordination, distributed systems, database primary keys, API request IDs, or temporary identifiers.
UUID Standards
UUIDs are standardized by RFC 4122 and provide reliable unique identification across distributed systems.