UUID Generator

What is a UUID?

A UUID (Universally Unique Identifier) is a 128-bit label used for information in computer systems. When generated according to the standard methods, UUIDs are practically unique, meaning you can safely use them as database keys, session IDs, or transaction IDs without checking a central registry for duplicates.

How to Use

1. Select the number of UUIDs you want to generate in bulk (up to 10,000 at once).
2. Toggle Uppercase or Hyphens based on your database requirements.
3. Click "Generate New UUIDs".
4. Copy the entire list to your clipboard.

Terminology

• UUIDv4 (Version 4 Random): This tool specifically generates Version 4 UUIDs. Out of the 128 bits, 122 bits are entirely pseudo-randomly generated, guaranteeing near-zero collision probability.

Common Use Cases

• Pre-generating Primary Keys for bulk SQL database INSERT scripts.
• Generating unique mock Session IDs for frontend API testing.

Security

We use the browser's native crypto.getRandomValues() or crypto.randomUUID() API to ensure cryptographically strong randomness. All UUIDs are generated locally in your browser and are never sent to any server.