GUID/UUID Generator
Implement RFC 4122 compliant UUID v4 strings for distributed databases. Configure bulk exports to populate mock APIs or primary keys. Validate hex patterns.
Example:
550e8400-e29b-41d4-a716-446655440000
Please configure parameters and execute the action.
Generation History
About Random GUID/UUID Generator
A comprehensive GUID (Globally Unique Identifier) and UUID (Universally Unique Identifier) generator designed to create unique identifiers for applications, databases, and systems. This tool generates UUID Version 4 (random) identifiers, which are the most commonly used and cryptographically secure. Perfect for developers, database administrators, and system architects who need reliable unique identifiers.
Key Features
- UUID Version 4 Standard - Generates cryptographically secure UUID Version 4 (random) identifiers following RFC 4122 specifications.
- Flexible Output Formats - Choose from standard format, with braces, without dashes, or uppercase formatting.
- Batch Generation - Generate up to 100 GUID/UUID values at once for efficiency.
- Standards Compliant - Generated UUIDs follow RFC 4122 specifications for maximum compatibility.
- History Tracking - Keep track of your generated GUIDs with timestamps and configuration settings.
- Easy Copying - Copy individual GUIDs or all GUIDs at once with convenient buttons.
- Mobile Friendly - Works perfectly on all devices and screen sizes.
- Cryptographically Secure - Uses secure random number generation for Version 4 UUIDs.
How to Use
Using this GUID/UUID generator is straightforward:
- The tool automatically generates UUID Version 4 (random) identifiers, which are recommended for most use cases.
- Choose your preferred output format (standard, braces, no dashes, or uppercase).
- Set how many GUIDs to generate (1-100).
- Click 'Generate GUID/UUID' to create your unique identifiers.
- Use the copy buttons to copy individual GUIDs or all GUIDs at once.
- View your generation history for reference and reuse.
Frequently Asked Questions
What is the difference between a GUID and a UUID?
In practice, they are the same. GUID is Microsoft's terminology, while UUID is the open standard defined by RFC 4122. Both are 128-bit identifiers. This tool generates UUID Version 4, which is the most common format using random numbers.
Is there a risk of duplicate UUIDs (collisions)?
The probability of a collision with UUID Version 4 is infinitesimal. With 122 bits of randomness, you would need to generate billions of UUIDs per second for years to have even a 50% chance of a single overlap.
Why use Version 4 instead of Version 1 or 5?
Version 4 is entirely random and does not leak sensitive information like MAC addresses or timestamps. It is the industry standard for general-purpose identification in modern web architecture and cloud services.
