UUID Generator

Generate UUID v4 (Universally Unique Identifiers) with various formatting options. All processing happens in your browser - completely random and secure. Perfect for database keys, API tokens, and unique identifiers in applications.

Number of UUIDs:

Generated UUIDs

Count: 0

Formatting Options

Uppercase Letters

Remove Hyphens

Add Braces { }

Line Prefix:

Line Suffix:

UUID Validation

How to Use

Set Quantity: Choose how many UUIDs to generate (1-1000)
Configure Format: Select formatting options like uppercase, hyphens, braces, and prefixes
Generate: Click "Generate UUIDs" to create new unique identifiers
Validate: Use the validation tool to check if existing UUIDs are properly formatted
Export: Copy all UUIDs to clipboard or download as a text file

Example UUID Formats

Standard UUID v4:

550e8400-e29b-41d4-a716-446655440000

Uppercase without hyphens:

550E8400E29B41D4A716446655440000

With braces:

{550e8400-e29b-41d4-a716-446655440000}

Frequently Asked Questions

What is a UUID and why use it?

A UUID (Universally Unique Identifier) is a 128-bit identifier that's virtually guaranteed to be unique. UUIDs are used for database primary keys, session tokens, file names, and anywhere you need unique identifiers without coordination between systems.

How random and secure are these UUIDs?

These are UUID version 4, which uses cryptographically secure random number generation. The probability of generating duplicate UUIDs is astronomically low (about 1 in 5.3 x 10^36 for version 4).

Is my data secure when using this generator?

Yes, absolutely. All UUID generation happens entirely in your browser using JavaScript's crypto.getRandomValues() for secure randomness. No UUIDs are sent to any server or stored anywhere.

What's the difference between UUID versions?

This tool generates UUID version 4 (random). Other versions include v1 (timestamp + MAC address), v3/v5 (namespace + name hash), and v2 (DCE Security). Version 4 is most commonly used for general purposes.

Can I generate UUIDs for commercial use?

Yes! UUIDs are not copyrighted or trademarked. They're an open standard (RFC 4122) and can be freely used in any application, commercial or otherwise.