UUID Generator
Generate random UUIDs (v4) instantly in your browser. No data leaves your device.
Examples of use
- Generate a UUID for a new database record
- Create unique identifiers for API request tracking
- Generate test data for QA and development
When to use this tool?
- When you need a unique identifier for database records
- When generating test data for API development or QA testing
- When creating unique IDs for logging, tracking, or session management
- When working on distributed systems that require collision-resistant identifiers
Frequently asked questions
- What is a UUID?
- A UUID (Universally Unique Identifier) is a 128-bit identifier that is unique across space and time. The v4 format generates a completely random identifier.
- Does this tool send data to a server?
- No. All UUID generation happens locally in your browser using the Web Crypto API. No data is sent anywhere.
- What is the difference between UUID v4 and other versions?
- UUID v4 is completely random. Other versions like v1 use timestamps and MAC addresses, while v5 uses namespace-based hashing. V4 is the most commonly used format for general purposes.