Generate random UUID identifiers (v1, v4, v5). Perfect for unique ID generation in databases and applications.
UUIDs (Universally Unique Identifiers) are 128-bit values used to create globally unique identifiers for data records, sessions, messages, and more. Our UUID Generator creates UUIDs in different versions to suit your specific needs. UUIDs are essential in modern software development. Databases use them as primary keys to uniquely identify records. Distributed systems use UUIDs to generate unique identifiers across multiple servers without coordination. Transaction tracking systems use UUIDs to trace requests through microservices. Session management uses UUIDs to track user sessions uniquely. The tool supports multiple UUID versions: UUID v1 (time-based, includes MAC address), UUID v4 (random, most commonly used), and UUID v5 (name-based, uses SHA-1 hashing with namespace). Each version has different characteristics and use cases. UUID v4 is the most common choice—it generates a random 128-bit value that is virtually guaranteed to be unique. UUID v1 uses timestamp and MAC address, making it unique but potentially less secure. UUID v5 generates consistent UUIDs from a namespace and name, useful when you need deterministic unique identifiers. Generate single UUIDs or batches of UUIDs for bulk operations. The tool formats UUIDs in standard format (with hyphens) or compact format (without hyphens) depending on your needs.
v1 is time-based, v4 is random, v5 is name-based. v4 is most commonly used for security and randomness.
Yes, the probability of collision is astronomically small with modern UUID algorithms.
UUIDs are better for distributed systems; sequential IDs are simpler but require central coordination.
Yes, generate batches of UUIDs for bulk operations in a single action.