UUID Generator

Our UUID generator creates RFC 4122 compliant Universally Unique Identifiers (UUIDs) instantly. Generate single or multiple UUIDs for databases, distributed systems, API keys, session IDs, and any application requiring guaranteed unique identifiers across different systems and platforms.

Key Features:

• Bulk Generation: Generate up to 100 UUIDs at once
• UUID v4 Support: Random-based UUIDs with cryptographic quality
• One-Click Copy: Copy individual UUIDs or all at once
• Download Option: Export generated UUIDs as a text file
• RFC 4122 Compliant: Industry-standard UUID format
• Browser-Based: Secure client-side generation using crypto API
• Instant Results: Generate UUIDs with zero latency
• No Storage: UUIDs are never stored or transmitted to servers

What is a UUID?

A UUID (Universally Unique Identifier) is a 128-bit number used to uniquely identify information in computer systems. UUIDs are represented as 32 hexadecimal digits, displayed in five groups separated by hyphens (e.g., 550e8400-e29b-41d4-a716-446655440000). The probability of generating duplicate UUIDs is so infinitesimally small that they are considered practically unique for all practical purposes.

Common Use Cases:

• Database Primary Keys: Unique identifiers for database records across distributed systems
• API Keys & Tokens: Generate secure, unique keys for authentication and authorization
• Session IDs: Create unique session identifiers for web applications
• File Names: Generate unique file names to prevent collisions in storage systems
• Message IDs: Unique identifiers for messages in messaging systems and queues
• Transaction IDs: Track unique transactions in financial and e-commerce systems
• Entity IDs: Identify entities in microservices and distributed architectures
• Reference Numbers: Generate unique reference numbers for orders, tickets, and documents

UUID Version 4 Explained:

UUID v4 generates identifiers using random or pseudo-random numbers. This version is the most commonly used because it requires no coordination between systems and provides excellent uniqueness guarantees. Our generator uses the browser's cryptographically secure random number generator (crypto.randomUUID()) to ensure maximum randomness and unpredictability, making the UUIDs suitable for security-sensitive applications.

Developer & Enterprise Benefits:

Perfect for developers, system architects, and database administrators working with distributed systems, microservices, cloud applications, and databases. UUIDs eliminate the need for centralized ID generation, allowing independent systems to create unique identifiers without coordination or conflicts. This makes them ideal for scaling applications horizontally and building fault-tolerant distributed systems.

Privacy & Security:

All UUID generation happens entirely in your browser using the Web Crypto API. No UUIDs are transmitted to or stored on any server, ensuring complete privacy and security. The tool works offline once loaded, and generated UUIDs are cryptographically random, making them suitable for security-sensitive applications including API keys, session tokens, and unique identifiers in authentication systems.

Technical Specifications:

• Format: 8-4-4-4-12 (xxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx)
• Total bits: 128 bits (16 bytes)
• Character representation: 36 characters (32 hex + 4 hyphens)
• Version bits: 4 bits indicate version 4
• Variant bits: 2 bits for RFC 4122 compliance
• Random bits: 122 bits of randomness
• Collision probability: ~1 in 2¹²² ≈ 5.3 × 10³⁶

Start generating UUIDs now - configure your requirements above and create unique identifiers for your applications, databases, APIs, and systems. Perfect for developers, engineers, and IT professionals who need reliable, unique identifiers for modern distributed applications.