About UUID Generator
Our UUID Generator creates RFC 4122 version 4 UUIDs (Universally Unique Identifiers), also known as GUIDs (Globally Unique Identifiers). These identifiers are 128-bit numbers that are extremely unlikely to be duplicated, making them perfect for unique identification purposes in databases, distributed systems, and more.
Features
Multiple Format Options
Generate UUIDs in various formats including standard, no dashes, with braces, uppercase, and more.
Bulk Generation
Generate up to 10,000 UUIDs at once for batch processing needs.
Copy & Download Options
Easily copy individual UUIDs or the entire batch. Download results in TXT or JSON format.
Cryptographically Secure
Uses cryptographically secure random number generation for maximum uniqueness and security.
Common Uses
- Database primary keys and unique identifiers
- Distributed systems and microservices
- Session IDs and temporary tokens
- File and resource naming
- Cross-system data synchronization
- Random number generation for testing
Technical Details
Version 4 UUIDs use random or pseudo-random numbers to ensure uniqueness. The probability of a collision (two UUIDs being the same) is extremely low - approximately 1 in 2¹²⁸ (or about 3.4 x 10³⁸).
The standard UUID format consists of 32 hexadecimal digits displayed in 5 groups separated by hyphens, in the form 8-4-4-4-12 for a total of 36 characters (32 alphanumeric characters and 4 hyphens).
Example: 550e8400-e29b-41d4-a716-446655440000