UUID/GUID Generator Online
Free UUID Generator Tool - Version 1, Version 4, Bulk Generation
Generate unique identifiers for databases, APIs, and applications
Generator Configuration
UUID Format Options
550e8400-e29b-41d4-a716-446655440000550e8400e29b41d4a716446655440000550E8400-E29B-41D4-A716-446655440000{550e8400-e29b-41d4-a716-446655440000}About UUID/GUID
UUID (Universally Unique Identifier) is a 128-bit identifier standard.
Version 4: Random generation, most widely used
Version 1: Time-based with MAC address
⚡ Collision probability: 1 in 2^122 (essentially zero)
Common Use Cases
History
No history yet
Unique IDs
128-bit identifiers
No Collisions
Cryptographically safe
Bulk Generate
Up to 1000 at once
History Track
Save generations
Why Use Our UUID Generator?
For Developers
Generate unique identifiers for database primary keys, API tokens, session IDs, and distributed systems. Perfect for MongoDB, PostgreSQL, and microservices architecture.
For Database Design
Create collision-free primary keys for distributed databases. UUIDs eliminate the need for centralized ID generation and prevent conflicts in multi-node systems.
Version Selection
Choose Version 4 for random, secure UUIDs ideal for most applications. Use Version 1 for time-based identifiers when chronological sorting is needed.
Bulk Generation
Generate up to 1000 UUIDs at once for seeding databases, testing, or batch operations. Export to text files for easy integration into your projects.