About This UUID Generator
Our free UUID generator creates version 4 universally unique identifiers following the RFC 4122 standard. UUIDs are 128-bit values that are virtually guaranteed to be unique across all systems and time. They're widely used in software development for database primary keys, distributed systems, API identifiers, and session tokens. This tool generates cryptographically random UUIDs in the standard format: 8-4-4-4-12 hexadecimal characters.
Features
Generate UUID version 4 (random)
Bulk generation up to 100 UUIDs
Quick quantity presets (1, 5, 10, 25, 50, 100)
Copy individual UUIDs with one click
Copy all UUIDs at once
Cryptographically secure random generation
Standard RFC 4122 compliant format
No server communication - all client-side
Instant generation
Mobile-friendly interface
Benefits
Guaranteed uniqueness across systems
No coordination needed between systems
Suitable for distributed databases
Privacy-focused - all generation in browser
Free and unlimited usage
No registration or sign-up required
Works offline after initial load
Fast bulk generation
Industry-standard format
Copy-paste ready for immediate use
Common Use Cases
Database primary keys and foreign keys
Distributed system entity identifiers
API request and response IDs
Session tokens and user IDs
File and document identifiers
Microservices correlation IDs
Message queue identifiers
Cache keys for distributed caching
Test data generation
Unique reference numbers