UUID Generator (Bulk UUIDs, Free, RFC 4122)

Why Use a UUID Generator?

A UUID (Universally Unique Identifier) is a 128-bit identifier used to uniquely identify information across systems without a central coordinating authority. Our tool generates UUID v4 identifiers with random numbers for maximum uniqueness—the collision probability is so astronomically low (1 in 2^122) that you can generate billions of UUIDs without worrying about duplicates.

Common Use Cases

• Database primary keys: Use UUIDs as primary keys in distributed databases (PostgreSQL, MongoDB) to avoid ID conflicts when merging data from multiple sources
• API request IDs: Track requests across microservices with unique correlation IDs for logging and debugging
• Session tokens: Generate unique session identifiers for user authentication and tracking
• File naming: Create unique filenames for uploaded images or documents to prevent collisions
• Distributed systems: Generate IDs in multi-node systems without centralized ID generation
• Testing and mocking: Create realistic test data with unique identifiers

Why This Tool?

• Bulk generation: Generate up to 10 UUIDs at once—perfect for seeding databases or creating test data
• Copy individual or all: Copy single UUIDs or all generated IDs at once (newline-separated)
• RFC 4122 compliant: Generates valid UUID v4 identifiers following the official standard
• 100% client-side: UUIDs generated in your browser using cryptographically secure random numbers
• Free tier: Generate hundreds of UUIDs for free before hitting limits

Pro tip: For URL-friendly unique identifiers, try our Slug Generator. For hashed identifiers, use our Hash Generator.