Free Online GUID / UUID Generator
Generate multiple GUIDs or UUIDs instantly, with format and encoding options for different workflows.
Results
What Is a GUID or UUID?
A GUID, also known as a UUID, is a long unique identifier used in software development, databases, APIs, distributed systems, and many automation workflows. These values are designed to reduce the chance of collisions when generating identifiers across different systems or points in time.
When Are GUIDs Used?
GUIDs are commonly used for primary keys, object identifiers, session tokens, import/export jobs, integration workflows, and application records that need a unique value without relying on a central counter. They are especially useful when records are created across multiple servers or services.
GUID vs UUID
In practice, GUID and UUID are often used interchangeably. GUID is a name popularized by Microsoft, while UUID is the broader standard term. For most developers, they refer to the same kind of 128-bit identifier.
Formatting and Encoding Options
This tool lets you generate GUIDs with or without hyphens, add braces or quotes, convert to uppercase, output plain text or JSON, and optionally encode the values using Base64, RFC 7515-compatible Base64URL, or URL encoding. That makes it easier to prepare identifiers for code, configuration files, APIs, or transport formats.