UUID Generator — Create Random v4 UUIDs
Free UUID generator. Create one or many random version 4 UUIDs (GUIDs) with uppercase and no-hyphen options. Copy all in one click.
Runs in your browser — your data is never uploaded.
Generate universally unique identifiers (UUIDs/GUIDs) for databases, APIs and test data. This tool creates random version 4 UUIDs using your browser’s secure random generator. Produce up to a hundred at once, choose uppercase or remove hyphens, and copy the whole list.
How to use the UUID Generator
- Choose how many UUIDs you need.
- Pick formatting options.
- Click Generate and copy the list.
UUID Generator — frequently asked questions
What is a UUID?
A 128-bit identifier written as 32 hexadecimal digits, designed to be unique without central coordination.
Can two UUIDs collide?
The chance of a random v4 collision is astronomically small for practical use.
UUID or GUID?
They are the same concept; GUID is the term often used in Microsoft environments.
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