GUID Generator
Generate GUIDs in multiple formats
About This Tool
GUID Generator helps you generate guids in multiple formats. Common searches include GUID generator, generate GUID, online GUID, making it useful for quick browser-based processing and immediate results.
Common Use Cases
- GUID Generator：Debug common issues in APIs, logs, and scripts
- GUID Generator：Create parameters for development and testing
- GUID Generator：Verify configuration before deployment or scheduled jobs
Practical Tips
- Test with a small example before applying the result in production
- Use this as a helper, not as a replacement for production validation
Features
- ✓Generate GUID v4
- ✓Standard format (8-4-4-4-12)
- ✓Braces format
- ✓No-hyphens format
- ✓Registry format
- ✓Uppercase/lowercase toggle
- ✓One-click copy all results
How to Use
- 1Set the number of GUIDs
- 2Select output format
- 3Optionally enable uppercase
- 4Click the generate button
- 5Click copy to copy all GUIDs
FAQ
What is the difference between GUID and UUID?
They are essentially the same. GUID (Globally Unique Identifier) is Microsoft's term for UUID. The underlying structure and generation algorithm are identical, both following RFC 4122. GUID is more common in Windows Registry and .NET ecosystems.
What is the registry format?
Registry format is the standard GUID representation in Windows Registry — a 32-character continuous hex string in uppercase, e.g., A1B2C3D4E5F67890ABCDEF1234567890.
Can GUID v4 repeat?
Like UUID v4, GUID v4 is generated from random numbers with an extremely low collision probability (about 1 in 2^122), making it globally unique in practice.