Generate UUID v4 (random) and UUID v1 identifiers instantly. Batch generate up to 1000 UUIDs with copy and download options.
The UUID Generator by TooliFyra creates universally unique identifiers (UUIDs) in v4 (random) and v1 formats. UUIDs are 128-bit identifiers used to uniquely identify records in databases, APIs, distributed systems, and software development.
UUID v4 generates completely random identifiers, while UUID v1 is based on timestamps and MAC addresses. Both formats ensure uniqueness across distributed systems without requiring a central authority.
UUIDs are the standard for generating unique identifiers in distributed systems. They eliminate the need for auto-incrementing database keys and prevent ID collisions across microservices. The UUID Generator makes it easy to create these identifiers for any project.
Database Design: Generate unique primary keys for distributed databases.
API Development: Create unique request IDs, session tokens, or resource identifiers.
Software Testing: Generate bulk test data with unique identifiers.
DevOps: Create unique container names, deployment IDs, or log correlation IDs.
TooliFyra's UUID Generator uses the Web Crypto API for true randomness, ensuring your UUIDs are cryptographically secure. The batch generation and multiple export formats make it the most practical UUID tool available.
UUID v1 is based on timestamp and MAC address (can reveal time and machine info). UUID v4 is completely random (recommended for most use cases).
UUID v4 has a collision probability of approximately 1 in 2^122, making collisions virtually impossible in practice.
Most APIs and databases accept both formats. With hyphens is the standard format (e.g., 550e8400-e29b-41d4-a716-446655440000).