A Universally Unique Identifier (UUID) is a 128-bit label used for information in computer systems to uniquely identify records without central coordination.

How unique is a UUID v4?

UUID v4 relies on random numbers. The probability of generating a duplicate is so infinitesimally small that it is considered virtually impossible.

UUID Generator

Generate random UUID v4 strings in bulk. Choose quantities, casing, and hyphen options. Copy all results in one click.

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How to Use UUID Generator

Enter the number of UUIDs you want to generate (up to 100).
Select whether to include hyphens and capital letters.
Click Generate and copy individual UUIDs or the entire list.

Understanding UUID v4

UUID version 4 is generated using random or pseudo-random numbers. Out of 128 bits, 6 bits are reserved for variant and version, leaving 122 bits of random data.

Frequently Asked Questions

What is a UUID?: A Universally Unique Identifier (UUID) is a 128-bit label used for information in computer systems to uniquely identify records without central coordination.
How unique is a UUID v4?: UUID v4 relies on random numbers. The probability of generating a duplicate is so infinitesimally small that it is considered virtually impossible.