UUID Generator
Generate random UUIDs (Universally Unique Identifiers) v4.
Generate UUIDs
Number of UUIDs
Generated UUIDs (0)
Click Generate to create UUIDs
How to use
- Set the number of UUIDs to generate (1-100)
- Click Generate to create new UUIDs
- Click on any UUID to copy it individually
- Use Copy All to copy all UUIDs at once
What is UUID?
UUID (Universally Unique Identifier) is a 128-bit identifier standardized by RFC 4122. Version 4 UUIDs are randomly generated and are the most commonly used type.
UUID v4 Format
xxxxxxxx-xxxx-4xxx-yxxx-xxxxxxxxxxxxThe "4" indicates version 4, and "y" is one of 8, 9, A, or B (variant indicator).
Key Properties
- 128 bits (16 bytes) in length
- 122 random bits for uniqueness
- 36 characters including hyphens
- Hexadecimal representation
Common Use Cases
Database Keys
Primary keys without auto-increment
Session IDs
Secure user session identification
File Names
Unique names for uploaded files
Transaction IDs
Track operations across systems
API Keys
Generate unique access tokens
Distributed Systems
IDs without central coordination