UUID/GUID Generator | DesignZig

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UUID/GUID Generator

Generate universally unique identifiers (UUIDs) version 4 for your applications and databases.

Click "Generate" to create UUIDs

How to Use

  1. Set Quantity: Choose how many UUIDs you need (1-100).
  2. Select Format: Customize the output format with uppercase, no hyphens, or braces options.
  3. Generate: Click the "Generate" button to create your UUIDs instantly.
  4. Copy or Download: Use "Copy All" to copy to clipboard, or "Download as TXT" to save as a file.

About UUIDs/GUIDs

A UUID (Universally Unique Identifier) or GUID (Globally Unique Identifier) is a 128-bit number used to uniquely identify information in computer systems. This tool generates Version 4 UUIDs, which are randomly generated and have an extremely low probability of collision.

Common Use Cases

  • Database primary keys
  • Session identifiers
  • API request tracking
  • File naming and versioning
  • Distributed system coordination

UUID v4 Format

  • 128-bit identifier (32 hex digits)
  • Standard format: 8-4-4-4-12
  • Example: 550e8400-e29b-41d4-a716-446655440000
  • Cryptographically random

Frequently Asked Questions

What's the difference between UUID and GUID?

UUID and GUID are essentially the same thing. UUID is the standard term defined by RFC 4122, while GUID is Microsoft's implementation. They both refer to 128-bit unique identifiers.

Are UUIDs truly unique?

While theoretically possible to generate duplicates, the probability is astronomically low (approximately 1 in 2^122). For practical purposes, UUID v4 can be considered unique.

Can I use these UUIDs in production?

Yes! This tool generates cryptographically secure random UUIDs suitable for production use in databases, APIs, and distributed systems.

What does the format "8-4-4-4-12" mean?

This refers to the grouping of hexadecimal digits separated by hyphens: 8 digits, then 4, then 4, then 4, and finally 12 digits. For example: 550e8400-e29b-41d4-a716-446655440000