Quick UUID Generator

UUID Version:

Format:

Generated UUID:

Ready to generate

Bulk UUID Generator

Number of UUIDs: Max: 10,000

UUID Version:

Format:

Include generation timestamp

Generated UUIDs:

Ready to generate bulk UUIDs

UUID Validator & Analyzer

UUID to Validate:

Enter a UUID to validate

Custom UUID Generator

Generate UUIDs with custom patterns or prefixes

Prefix (optional):

Suffix (optional):

Count:

Custom UUIDs:

Ready to generate custom UUIDs

About UUID Generator

UUID (Universally Unique Identifier) is a 128-bit identifier used to uniquely identify information in computer systems. Our generator supports multiple UUID versions and formats for various development needs.

Key Features

Multiple Versions: Support for UUID v1 (timestamp-based) and v4 (random)
Flexible Formats: Standard, compact, braces, uppercase, and quoted formats
Bulk Generation: Generate up to 10,000 UUIDs at once
Custom Patterns: Add prefixes and suffixes for specific use cases
Validation & Analysis: Validate existing UUIDs and analyze their properties
Export Options: Download as text, JSON, CSV, or SQL format
Developer Formats: JavaScript arrays, JSON arrays, and SQL INSERT statements

UUID Versions Explained

Version 1: Based on timestamp and MAC address (time-ordered, but less random)
Version 4: Completely random (most commonly used, cryptographically secure)
Nil UUID: Special UUID with all bits set to zero (00000000-0000-0000-0000-000000000000)

Technical Notes

All UUIDs are generated using cryptographically secure random number generation
Version 1 UUIDs use simulated MAC addresses for privacy
Generated UUIDs follow RFC 4122 specifications
Collision probability is virtually zero (1 in 2^122 for v4)
All generation happens locally in your browser

Common Use Cases

Our UUID Generator is essential for various development and system design scenarios:

🗄️ Database Design

Primary keys for distributed systems
Unique record identifiers
Foreign key relationships
Data migration and merging

🌐 Web Development

Session identifiers
API request tracking
File upload naming
Cache keys and tokens

☁️ Microservices

Service instance identification
Distributed tracing IDs
Message queue correlation
Event sourcing identifiers

🧪 Testing & Development

Test data generation
Mock API responses
Unique test identifiers
Development environment setup

Frequently Asked Questions

What's the difference between UUID v1 and v4?

UUID v1 is based on timestamp and MAC address, making it time-ordered but potentially traceable. UUID v4 is completely random and more secure, which is why it's most commonly used.

Are UUIDs truly unique?

While not mathematically guaranteed, the probability of generating duplicate UUIDs is so low (1 in 2^122 for v4) that it's considered practically impossible in real-world scenarios.

Can I use UUIDs as database primary keys?

Yes! UUIDs are excellent for primary keys, especially in distributed systems. However, consider using v1 UUIDs for better database performance due to their time-ordered nature.

What format should I use for my application?

The standard format (8-4-4-4-12) is most widely supported. Use compact format for space efficiency, or specific formats based on your system requirements.

How secure are the generated UUIDs?

Our v4 UUIDs use cryptographically secure random number generation, making them suitable for security-sensitive applications. v1 UUIDs are less random but still unique.

Can I generate UUIDs offline?

Yes! Our tool works entirely in your browser without requiring an internet connection. All generation happens locally on your device.

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