UUID Generator - v1, v4 & Nil
Generate UUIDv1, UUIDv4, and Nil identifiers instantly. Bulk generation up to 1000 UUIDs, validation, and complete history tracking.
UUID Generator
UUID v4 uses random data. Best for most use cases requiring unique identifiers.
What is a UUID Generator?
A UUID generator creates universally unique identifiers (UUIDs) according to RFC 4122 standards for use in software, databases, and distributed systems. Our UUID generator supports multiple versions including time-based (v1), random (v4), and Nil UUIDs. Generate single or bulk UUIDs, validate existing identifiers, and track generation history. Perfect for developers needing unique IDs for database records, API tokens, session identifiers, or distributed system components. All generation happens in your browser for complete privacy.
Key Features
- Generate UUID v1 (time-based), v4 (random), and Nil UUIDs
- Bulk generation up to 1000 UUIDs at once
- UUID validation with version and variant detection
- Auto-generation mode for continuous UUID creation
- Complete history tracking with timestamps
- Copy individual or bulk UUIDs to clipboard
- Download UUIDs as text files
- Works 100% client-side for maximum privacy
How to Use
- Select the UUID version you need (v1, v4, or Nil)
- Click 'Generate' for a single UUID or enter quantity for bulk generation
- Copy the generated UUID(s) to clipboard or download as a file
- Use the validate tab to check existing UUIDs
Common Use Cases
- Generate unique IDs for database records and primary keys
- Create tokens for APIs, sessions, and authentication
- Generate identifiers for distributed systems and microservices
- Validate existing UUIDs and check their version/variant
- Bulk generate UUIDs for testing and development
- Learn about different UUID standards (RFC 4122)