UUID Generator

Generate UUIDs (GUIDs)

Create Universally Unique Identifiers for databases, APIs, and distributed systems. UUIDs are 128-bit numbers guaranteed to be unique across space and time.

Configuration

UUID Version

Version 4 (Random)

Completely random, most commonly used

Version 1 (Time-based)

Based on timestamp and MAC address

Format Options

Uppercase Letters

A-F

Include Hyphens

Standard format

Wrap in Braces

{}

Generated UUID

Click "Generate UUID" to create a unique identifier

About UUIDs

UUID (Universally Unique Identifier) or GUID (Globally Unique Identifier) is a 128-bit number used to identify information in computer systems.

UUID v4 (Random)

• Completely random
• Most commonly used
• 122 random bits

UUID v1 (Time-based)

• Based on timestamp
• Uses MAC address
• Time-ordered

UUIDs are designed to be unique across space and time. The probability of generating a duplicate is astronomically small.