GUID Generator
Generate Globally Unique Identifiers (GUIDs) and UUIDs. Choose from different formats including standard UUID v4, with or without hyphens, and uppercase/lowercase variants.
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about guid/uuid
What are GUIDs and UUIDs?
A GUID (Globally Unique Identifier) or UUID (Universally Unique Identifier) is a 128-bit number used to uniquely identify information in computer systems. The most common version is UUID v4, which is randomly generated.
Format Options
- UUID v4: Standard format with hyphens (e.g., 550e8400-e29b-41d4-a716-446655440000)
- GUID: Same as UUID but typically shown in uppercase Compact: No hyphens for space efficiency (e.g., 550e8400e29b41d4a716446655440000)
- URN: Uniform Resource Name format (e.g., urn:uuid:550e8400-e29b-41d4-a716-446655440000)
Common Uses
- • Database primary keys
- • Session identifiers
- • API resource identifiers
- • File naming
- • Component identifiers in distributed systems