UUID Generator

About UUID Generator

UUIDs (Universally Unique Identifiers) are the standard way to create unique IDs without a central registry. Davirix UUID Generator produces RFC 4122 version 4 UUIDs using cryptographically secure randomness. Each UUID has 122 random bits, giving 5.3×10^36 possible values — the probability of generating a duplicate is astronomically low. Generate single UUIDs for quick use, or batch-generate up to 1,000 for seeding databases, creating test data, or populating API payloads. The tool also provides UUIDs without hyphens and in uppercase for systems that require those formats.

Key Features

• RFC 4122 v4 UUIDs with cryptographic randomness
• Batch generate 1 to 1,000 UUIDs
• Formats: standard (with hyphens), compact (without), uppercase
• One-click copy for individual or all UUIDs
• UUID validation: paste any string to check if it's a valid UUID
• No UUIDs are stored or logged

How to Use UUID Generator

1. 1

   Click generate

   One click produces a new UUID. No configuration needed.

2. 2

   Choose format

   Switch between standard, compact, or uppercase formats.

3. 3

   Copy or batch generate

   Copy individual UUIDs or generate up to 1,000 at once.

Common Use Cases

• Generate primary keys for database records
• Create unique identifiers for API resources
• Seed test databases with unique IDs
• Generate session tokens for web applications
• Create unique file names to prevent collisions

Frequently Asked Questions

What is a UUID?

A Universally Unique Identifier is a 128-bit number used to identify information in computer systems. The v4 variant is generated randomly and is virtually guaranteed to be unique.

Can two UUIDs ever be the same?

Theoretically possible, but the probability is about 1 in 2^122 (5.3×10^36). You'd need to generate a billion UUIDs per second for 85 years to have a 50% chance of a single collision.

Should I use UUID v4 or v7?

v4 is the most widely used and is purely random. v7 includes a timestamp prefix, making it sortable by creation time. Use v4 for most purposes; v7 if you need time-ordered IDs.