WebHerramientas

UUID/GUID

Generate unique identifiers in multiple formats

Version

Fully random. The most common format.

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    Free Online UUID/GUID

    Generate universally unique identifiers (UUID) version 4, the most widely used standard for database IDs, API keys or session identifiers. Generate up to 100 at once and choose from 6 output formats: normal, uppercase, no dashes, no dashes uppercase, wrapped in braces, or braces uppercase.

    Why use UUID/GUID

    • Generate up to 100 UUID v4s at once
    • 6 output formats: with/without dashes, uppercase, braces
    • Copy a single UUID or all of them with one click
    • Generated in your browser — nothing is sent to a server
    • Free, no usage limit

    How to use it in 3 steps

    1. 1

      Set the quantity

      Choose how many UUIDs to generate, up to 100.

    2. 2

      Choose the format

      Select one of the 6 available output formats.

    3. 3

      Generate and copy

      Copy a single UUID or all of them with one click.

    Questions about UUID/GUID

    What UUID version does this tool generate?

    UUID version 4, generated from random numbers, the most widely used standard for unique identifiers in databases and APIs.

    Can I generate several UUIDs at once?

    Yes, you can generate up to 100 UUIDs in one go and copy them all together.

    What output formats are available?

    Normal (with dashes), uppercase, no dashes, no dashes uppercase, wrapped in braces {}, and braces uppercase.

    Can two generated UUIDs be the same?

    It's mathematically extremely unlikely: a UUID v4 has 2^122 possible combinations, so the chance of a collision is practically zero.

    Is UUID/GUID free?

    Yes, UUID/GUID from WebHerramientas is 100% free. No registration or subscription required. You can use it as many times as you need at no cost.

    Is it safe to use UUID/GUID online?

    Yes, all information is processed directly in your browser. We do not store or send your data to any external server.

    Does UUID/GUID work on mobile?

    Yes, the tool is fully responsive and works on any device: phone, tablet or computer with a modern browser.