UUID Generator

Generate UUID v4 identifiers.

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About the UUID Generator

The UUID Generator creates version 4 universally unique identifiers for development, testing, databases, APIs, and configuration workflows. UUIDs are useful when you need unique values that are not based on a simple sequence or database counter.

Choose how many UUIDs you need and generate random identifiers using the browser's cryptographic capabilities. Developers often use UUID v4 values for records, request IDs, test data, session-like references, fixtures, and distributed systems where uniqueness matters.

UUID Generator FAQs

What is a UUID?

A UUID is a 128-bit identifier commonly written as a string and used to uniquely identify data or objects.

What is UUID v4?

UUID v4 is a randomly generated UUID version, commonly used when identifiers should not follow a predictable sequence.

When should developers use UUIDs?

UUIDs are helpful for database records, API objects, logs, testing, imports, and distributed systems that create IDs independently.

Best Uses

Generate IDs for databases, test fixtures, API payloads, logs, imports, prototypes, and distributed applications.