How to Use the GUID Generator
Generate Globally Unique Identifiers (GUIDs) for your applications instantly.
Instructions
- Enter the number of GUIDs to generate (1-100)
- Choose case preference (lowercase or UPPERCASE)
- Select whether to include hyphens as separators
- Click "Generate" to create GUIDs
- Results displayed in a table format
What is a GUID?
GUID stands for Globally Unique Identifier, a 128-bit identifier designed to be unique across space and time. Also known as UUID (Universally Unique Identifier).
GUID Format
- Standard Format: xxxxxxxx-xxxx-4xxx-yxxx-xxxxxxxxxxxx
- No Separator: xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
- Always unique: Virtually impossible to generate duplicates
- Platform independent: Works across all systems
Settings Explained
- Count: Number of GUIDs to generate at once
- Uppercase/Lowercase: Convert hex characters to uppercase or lowercase
- Separator (-): Include or remove hyphens from the GUID
Common Use Cases
- Database primary keys and unique identifiers
- Session tracking in web applications
- Unique file names and resource IDs
- Distributed systems and microservices
- Tracking objects across systems
Examples
Example 1 - Standard Format: 550e8400-e29b-41d4-a716-446655440000
Example 2 - No Separator: 550e8400e29b41d4a716446655440000
Technical Details
The generator follows RFC 4122 standard. The '4' in the format indicates version 4 (random) GUIDs. The 'y' character is always 8, 9, a, or b to maintain GUID validity. Each GUID has a probability of collision so low (1 in 5.3 × 10^36) that it's considered practically unique.