Random UUID Generator

A UUID (Universally Unique Identifier) is a standard for creating unique identifiers. The random UUID generator creates unique strings that are used in development to identify records in databases, create session tokens, and unique keys.

Our generator allows you to create up to 100 UUIDs at once. This is convenient for bulk populating databases, testing applications, and creating large sets of unique identifiers.

Yes, all generated UUIDs comply with RFC 4122. They have the correct format (8-4-4-4-12 characters) and use cryptographically strong algorithms to ensure uniqueness.

UUIDs are designed for use across various systems and platforms. They are compatible with most databases, programming languages, and frameworks, making them a universal solution for creating unique identifiers.

Our generator works entirely in your browser — no data is sent to the servers. Generation occurs locally using secure algorithms, ensuring the confidentiality and security of your UUIDs.

The probability of a UUID collision (especially for Version 4 UUIDs, which are randomly generated) is extremely small, making them practically unique. An astronomical number of UUIDs would need to be generated to have a reasonable chance of collision.

UUID v1s are time-based and MAC address-based. V3 and V5 are based on hashes of namespaces and names. V4s are based on random or pseudo-random numbers. Version 4 is the most common for random unique identifiers.

Yes, UUIDs are often used as database primary keys, especially in distributed systems, due to their global uniqueness. However, they can impact index performance compared to sequential integers due to their random nature.