UUID Generator
Generate unique UUIDs (v4) instantly.
926aef64-399f-480d-90b3-68cd0c5a7d318c08424c-d0ac-4e44-95ab-c676f097ac87ae7d3a0a-622b-42d5-afec-4e686298bea6e8a21d88-f1b0-4248-9907-39317e89a943e109b27c-ca79-4231-bbe6-a153ce66cb3aWhat is a UUID?
A UUID (Universally Unique Identifier) is a 128-bit identifier that is practically unique across all computers and systems. Version 4 UUIDs are randomly generated and are the most commonly used type.
When to Use This Tool
Database Primary Keys
Generate unique identifiers for database records that work across distributed systems.
API Request Tracking
Create unique request IDs for logging and debugging API calls.
Session Identifiers
Generate secure, unpredictable session tokens for web applications.
File Naming
Create unique filenames to prevent conflicts when uploading user-generated content.
Examples
Standard UUID v4
[Generate]
550e8400-e29b-41d4-a716-446655440000
💡 Format: 8-4-4-4-12 hexadecimal digits with hyphens
Multiple UUIDs
[Generate 3]
6ba7b810-9dad-11d1-80b4-00c04fd430c8 6ba7b811-9dad-11d1-80b4-00c04fd430c9 6ba7b812-9dad-11d1-80b4-00c04fd430ca
💡 Each UUID is cryptographically unique
Common Mistakes to Avoid
Using UUIDs as sortable timestamps
Solution: UUID v4 is random and not time-based. Use timestamp fields or UUID v1/v7 for time ordering.
Assuming UUIDs are sequential
Solution: UUIDs are random. If you need sequential IDs, use auto-increment or ULID instead.
Removing hyphens for "cleaner" look
Solution: Hyphens are part of the standard format. Keep them for compatibility with UUID parsers.