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Random UUID Generator

Generate random UUIDs and GUIDs

Generate random UUIDs (Universally Unique Identifiers) and GUIDs instantly. Support for UUID versions 1, 4, and custom formats. Perfect for creating unique identifiers for databases, APIs, or testing purposes.

How to generate random UUIDs?

It's straightforward:

  • Select UUID version (v1, v4, or custom)
  • Choose how many UUIDs to generate
  • Select format (with or without hyphens)
  • Click 'Generate' to create random UUIDs
  • Copy individual UUIDs or copy all at once
  • Generate again for different UUIDs

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Why Generate Random UUIDs?

UUIDs (Universally Unique Identifiers) are essential for creating unique identifiers in distributed systems. They ensure uniqueness without requiring central coordination. A random UUID generator helps you create these identifiers quickly for testing, development, or database seeding.

Perfect For

  • Creating unique identifiers for databases
  • Generating test data with unique IDs
  • Testing UUID parsing and validation
  • Creating sample data for APIs
  • Learning about UUID formats

Frequently Asked Questions (FAQs)

What is a UUID?

UUID stands for Universally Unique Identifier. It's a 128-bit identifier that's guaranteed to be unique across space and time. UUIDs are commonly used in databases, APIs, and distributed systems.

What's the difference between UUID v1 and v4?

UUID v1 is time-based and includes MAC address information, making it somewhat predictable. UUID v4 is randomly generated and is the most commonly used version for creating unique identifiers.

Are UUIDs guaranteed to be unique?

While UUIDs are designed to be unique, the probability of collision is extremely low (virtually zero for practical purposes). UUID v4 uses random numbers, making collisions astronomically unlikely.

Can I use these UUIDs in production?

Yes! The generated UUIDs follow the standard UUID format and can be used in production applications. They're valid identifiers that will work with any UUID-compatible system.

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