UUID Generator

Generate unique identifiers (UUID v4) instantly for use in databases, APIs and software projects.

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About UUID v4

xxxxxxxx-xxxx-4xxx-yxxx-xxxxxxxxxxxx

UUID v4 uses 122 random bits. The probability of a collision is astronomically small — about 1 in 5.3×10³⁶.

How to use?

  1. 1
    Choose countSelect how many UUIDs to generate (1–20).
  2. 2
    GenerateClick Generate to produce your UUIDs instantly.
  3. 3
    Copy and useCopy one or all UUIDs and use them in your project.

FAQ

What is a UUID?
UUID stands for Universally Unique Identifier. It is a 128-bit label used to uniquely identify information in computer systems without central coordination.
Is UUID v4 truly unique?
In practice, yes. With 2¹²² possible values, the chance of two random v4 UUIDs colliding is negligible — far smaller than the probability of a cosmic ray flipping a bit in your RAM.
What is the difference between UUID and GUID?
GUID (Globally Unique Identifier) is Microsoft's term for UUID. They follow the same standard and are interchangeable for most purposes.

UUID Generator

A UUID (Universally Unique Identifier) is a 128-bit number represented as 32 hexadecimal digits grouped in five sections. UUID v4 generates identifiers using random numbers, making them suitable for use as database primary keys, session tokens, file names and API resources.

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