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UUID Settings

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Letter Case

Generated UUIDs

Generate Multiple UUID v4 Values Online

Generate one or many random UUID v4 values online. Choose the quantity and letter case, then copy or download identifiers for testing and APIs.

How to use this tool

Create random version 4 UUIDs for records, fixtures, request identifiers, and development data. You can generate a single value or a small batch in lowercase or uppercase.

  1. 1

    Set the quantity

    Choose how many UUIDs to create, from one value up to the tool limit.

  2. 2

    Choose the letter case

    Select lowercase or uppercase hexadecimal letters to match your project convention.

  3. 3

    Generate the UUIDs

    Run the generator to create a fresh set of random UUID v4 values.

  4. 4

    Copy or download

    Copy the generated list or download it for fixtures, scripts, or test data.

UUID Generator FAQ

What is a UUID?
A UUID (Universally Unique Identifier) is a 128-bit unique value used to identify data across systems without duplication.
Why should I use a UUID?
UUIDs let you create identifiers without relying on a central counter or database sequence. They are useful when records are created across different systems, devices, or services and still need distinct IDs.
Are UUIDs truly unique?
UUIDs are designed to be extremely unique, and the chances of duplication are practically negligible.
What UUID versions does this tool support?
This tool typically generates random UUIDs (Version 4), which are widely used for most applications.
Is it safe to generate UUIDs here?
Yes, UUIDs are generated locally in your browser and are not stored or shared with any server.