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UUID Generator

Generate random UUID v4 identifiers. Bulk generate up to 100 at once.

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UUID Generator

Generate random UUID v4 identifiers. Bulk generate up to 100 at once.
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How to Use UUID Generator

  1. 1

    Set your options

    Choose the number of UUIDs to generate (1-100), and toggle hyphenation or uppercase as needed.

  2. 2

    Generate UUIDs

    Click the Generate button to create your UUIDs using the browser's cryptographically secure random number generator.

  3. 3

    Copy results

    Hover over any UUID to copy it individually, or click Copy All to copy the entire list.

Frequently Asked Questions

UUID v4 (Universally Unique Identifier version 4) is a 128-bit identifier generated using random or pseudo-random numbers. The format is xxxxxxxx-xxxx-4xxx-yxxx-xxxxxxxxxxxx where x is a random hex digit and y is one of 8, 9, a, or b.

Yes. This tool uses crypto.randomUUID(), which is backed by the browser's cryptographically secure pseudo-random number generator (CSPRNG).

Yes. Uncheck the Hyphenated option to generate UUIDs without dashes, which is useful for database primary keys or compact identifiers.

You can generate up to 100 UUIDs at once. All generation happens instantly in your browser.

Practically, no. UUID v4 provides 122 bits of randomness, yielding roughly 5.3 x 10^36 possible values. The probability of collision is astronomically low.