GUID Generator
Generate cryptographically secure GUID/UUID v4 strings with optional braces and case formatting.
{with braces}
Lowercase
What is a GUID?
A GUID (Globally Unique Identifier) is a 128-bit number used to uniquely identify information in computer systems. This tool generates GUID/UUID v4 strings using the browser's cryptographically secure random number generator.
How to Use the GUID Generator
Choose the number of GUIDs to generate (up to 50), select your preferred format (with or without braces), and pick uppercase or lowercase. Click "Generate" and copy individual GUIDs or all at once.
Example
A typical GUID looks like {550e8400-e29b-41d4-a716-446655440000} (with braces) or 550e8400-e29b-41d4-a716-446655440000 (without braces).
Common Use Cases
- Generating unique primary keys for database records.
- Creating unique identifiers for API requests or session tokens.
- Testing applications that require unique string identifiers.
FAQs
- Are generated GUIDs truly unique? UUID v4 uses 122 random bits, making collisions statistically impossible for any practical number of generated values.
- What's the difference between GUID and UUID? They are the same thing. GUID is Microsoft's term; UUID is the general standard (RFC 4122).