UUID Generator
Security Tools
Generate unique identifiers
How to Use
- Set the number of UUIDs to generate
- Click Generate
- Copy the UUIDs
Example / Use Case
Generate UUID for Database Record
A developer creates a new user record in a distributed database. They generate a UUID as the primary key to ensure uniqueness across all database servers.
Input
Click Generate
Output
UUID: 550e8400-e29b-41d4-a716-446655440000
How It Works
UUID (Universally Unique Identifier) is a 128-bit identifier standardized by the Open Software Foundation. UUID v4 generates random identifiers using cryptographically secure random number generators. The format consists of 32 hex digits separated by hyphens in groups of 8-4-4-4-12. Unlike sequential IDs, UUIDs can be generated offline without a central authority, making them perfect for distributed systems, microservices, and federated databases. Each UUID contains 122 bits of randomness (6 bits are used for version and variant), giving 2^122 possible combinations. For generating random strings with custom character sets, use the Random String Generator tool.
How to Use
- 1Click the "Generate UUID" button
- 2View the newly created UUID
- 3Copy to clipboard for immediate use
- 4Generate additional UUIDs as needed
Frequently Asked Questions
UUID v4 uses cryptographically random numbers. It is the most common UUID type and provides the best randomness.