UUID Generator

Generate UUIDs v1, v4, and v5 with bulk generation capabilities and customizable formatting options.

UUID Version

UUID v1

Time-based

UUID v4

Random

UUID v5

Name-based

Generated UUID

Formatted Output

-

Format Options

Uppercase Include Dashes Add Braces

Bulk Generation

Number of UUIDs: 5

1 50

Generated UUIDs

About UUIDs

• UUID stands for Universally Unique Identifier
• 128-bit number used to identify information
• Standardized format: xxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx
• Extremely low probability of duplication
• Used in databases, distributed systems, and more
• Different versions for different use cases

Version Comparison

• v1: Time-based, contains timestamp
• v4: Random, most common for general use
• v5: Deterministic, same input = same UUID
• v1 is good for database records
• v4 is ideal for security tokens
• v5 is perfect for content addressing

Common Use Cases

Database Primary Keys

Unique identifiers for database records across distributed systems

Session Identifiers

Secure session tokens for web applications and APIs

Content Addressing

Identifying content by hash using deterministic UUIDs