UUID Generator

Generate universally unique identifiers instantly

Press Ctrl+G to generate

UUID Version

v4 Completely random UUID. Most commonly used version.

v7 New standard with Unix timestamp. Sortable and database-friendly.

v1 Generated using timestamp and MAC address. Ideal for distributed systems.

v3 Created from namespace and name using MD5. Deterministic output.

v5 Like v3 but uses SHA-1. More secure than MD5.

Namespace

Name

Quantity

Generate up to 500 UUIDs at once

Format Options

UPPERCASE Include hyphens

Generated UUIDs

What is UUID?

UUID (Universally Unique Identifier) is a 128-bit label used for information in computer systems. The term GUID (Globally Unique Identifier) is also used, especially in Microsoft systems.

UUID Structure

A standard UUID looks like this: 550e8400-e29b-41d4-a716-446655440000. It consists of 32 hexadecimal digits displayed in 5 groups separated by hyphens (8-4-4-4-12).

Why Use UUIDs?

Unique across all systems without central authority
Can be generated offline
Perfect for distributed databases
No sequential patterns to predict
Standard format recognized worldwide

Common Use Cases

Database primary keys
Session identifiers
API request tracking
File naming in storage systems
Distributed system synchronization

What is UUID? UUID Versions FAQ