UUID Generator
Generate universally unique identifiers (UUIDs) version 4 instantly.
About UUID Generator
The UUID Generator is a simple tool to create Universally Unique Identifiers (UUIDs), specifically Version 4 (randomly generated). These are widely used in software development for unique database keys and session IDs.
How to Use?
- Select how many UUIDs you want to generate (default is 1).
- Click the "Generate UUID" button.
- The new UUID(s) will appear in the text area.
- Click "Copy" to save them to your clipboard.
Features
- Generates standard UUID v4.
- Bulk generation support (create multiple at once).
- One-click copy to clipboard.
- Fast and secure (client-side generation).
FAQ
What is a UUID?
A UUID (Universally Unique Identifier) is a 128-bit label used for information in computer systems. It allows distributed systems to uniquely identify information without significant central coordination.
What is Version 4 UUID?
Version 4 UUIDs are generated using random numbers. They are the most common type of UUID used in modern applications because they don't rely on the machine's MAC address or time (unlike v1).
What is the chance of a collision?
The probability of generating two identical UUID v4s is extremely low—so low that for all practical purposes, it is considered impossible in typical applications.
Can I use these for database Primary Keys?
Yes, UUIDs are excellent for primary keys, especially in distributed databases or when you need to generate IDs before saving the record to the database.