UUID Generator

Generate universally unique identifiers (UUID v4) for your applications. Each UUID is cryptographically random and guaranteed unique.

This tool generates fictitious data intended exclusively for software testing and development purposes. The data does not correspond to real people or entities and must not be used for illegal, fraudulent purposes, or in ways that violate the privacy of others. Compliant with LGPD (Brazilian Data Protection Law).

See also:

Voter ID Generator
SIN Validator (Canada)
CNH Generator
RG Generator
CPF Validator
SSN Validator (USA)
Regex Tester
Color Picker

About the UUID Generator

What is UUID?

UUID (Universally Unique Identifier) is a 128-bit identifier used to uniquely identify information without central coordination. The format is xxxxxxxx-xxxx-4xxx-yxxx-xxxxxxxxxxxx.

UUID v4

We generate version 4 UUIDs using cryptographically secure random generation (crypto.randomUUID). The probability of collision is astronomically low — you would need to generate 1 billion UUIDs per second for 85 years to have a 50% chance of a duplicate.

Format options

Choose between uppercase or lowercase and with or without hyphens, according to your system's needs. Some databases prefer UUIDs without hyphens to save space.