UUID Generator

Generate one or many UUIDs (v4) instantly.

A UUID generator creates Universally Unique Identifiers — 128-bit values used to uniquely identify records, files and resources. It can produce many at once.

How to Use the UUID Generator

  1. Set the count. Choose how many UUIDs to generate.
  2. Copy the result. Copy the UUIDs or download them as a file.

This tool processes your input locally in your browser. Nothing is uploaded.

What Is UUID Generator?

UUIDs (Universally Unique Identifiers) provide identifiers that are unique without a central authority, making them ideal for distributed systems.

What is a UUID?

A UUID is a 128-bit number formatted as 32 hexadecimal digits in groups of 8-4-4-4-12, e.g. 550e8400-e29b-41d4-a716-446655440000. Version 4 uses random values.

Why use UUIDs?

UUIDs avoid collisions across databases and systems, are safe to generate offline, and do not reveal sequential information.

Key Features

  • Cryptographically random v4 UUIDs
  • Generate many at once
  • Copy or download

Examples

  • 550e8400-e29b-41d4-a716-446655440000

Common Use Cases

  • Database primary keys
  • API resource IDs
  • Session tokens

Tips & Best Practices

  • Use v4 for general unique identifiers.

Limitations

  • Collisions are astronomically unlikely but not impossible.

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Frequently Asked Questions

What is a UUID?
A 128-bit universally unique identifier used to uniquely identify resources.
Are these truly random?
Yes, they are generated using the browser's cryptographic random source.
Can I generate multiple at once?
Yes, up to 100 at a time.
Is it free?
Yes, and it runs locally.

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