UUID Generator
Generate universally unique identifiers (UUID v4) instantly. Perfect for database IDs, API keys, or any unique identifier needs.
Click "Generate" to create UUIDs
What is a UUID?
A UUID (Universally Unique Identifier) is a 128-bit identifier that is unique across all devices and time. Version 4 UUIDs are randomly generated.
How to Use
Click "Generate" to create UUIDs. Use the quick buttons for batch generation. Toggle uppercase or remove hyphens as needed. Click any UUID to copy it.
Privacy First
All UUIDs are generated entirely in your browser using cryptographically secure random number generation. Nothing is sent to any server.
What this tool is used for
A UUID generator is useful when you need random unique identifiers for database records, distributed systems, queues, or test data. It saves time when you need one identifier quickly or a batch of UUIDs for setup work.
Developers often use UUID v4 values for client-generated IDs, resource keys, seeded fixtures, and systems where multiple services create records independently. Because generation happens locally in the browser, there is no need to call an API or install a package.
Common use cases
- Generate unique identifiers for databases and resource records
- Create IDs for distributed systems, queues, and event workflows
- Produce UUIDs for fixtures, migrations, and manual test data