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UUID/GUID Generator
Generate version 4 UUIDs (Universally Unique IDentifiers) for applications, databases, and APIs.
No uploads • Client-side only • Your data stays on your device
Generator Settings
Maximum: 1000 UUIDs
Format Examples:
Default:
550e8400-e29b-41d4-a716-446655440000UPPERCASE:
550E8400-E29B-41D4-A716-446655440000lowercase:
550e8400-e29b-41d4-a716-446655440000No Hyphens:
550e8400e29b41d4a716446655440000About UUID v4:
- Randomly generated using cryptographically secure methods
- 122 bits of randomness (extremely low collision probability)
- Widely used in databases, APIs, and distributed systems
- Format: 8-4-4-4-12 hexadecimal digits
- Generated using Web Crypto API for maximum security
Common Use Cases:
- Database primary keys
- API request tracking and correlation IDs
- Session identifiers
- File and object naming
- Distributed system entity identification
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All processing happens directly in your browser using JavaScript. Your files, passwords, and data never leave your device and are never uploaded to our servers. We cannot see, store, or access anything you process with this tool.
No account required • No tracking • No data collection • Works offline after initial load