UUID Generator
Generate universally unique identifiers.
Frequently Asked Questions
What is a UUID?
A UUID (Universally Unique Identifier) is a 128-bit identifier used to uniquely identify records, objects, or resources in a system without needing a central authority to coordinate the values.
What is a UUID v4?
UUID v4 is generated from random or pseudo-random numbers. It's the most commonly used UUID version because it doesn't require any input like a name or timestamp, making it the fastest way to get a unique, unpredictable identifier.
How do I generate a UUID?
Choose a UUID version (v4 is the default and most common), click "Generate a new UUID," and copy the result with the copy icon. Use the Bulk Generation section below to create up to 100 UUIDs at once.
Is a UUID the same as a GUID?
Yes, for practical purposes. GUID (Globally Unique Identifier) is Microsoft's name for the same 128-bit identifier format defined by the UUID standard. A GUID is typically a UUID v4.
Can I generate multiple UUIDs at once?
Yes. Use the Bulk Generation tool to create between 1 and 100 UUIDs at a time, in any supported version, then copy them individually or all at once.
Is this UUID generator free?
Yes, ToolDock's UUID generator is completely free to use, requires no signup, and runs entirely in your browser.