What is a UUID Generator?
A UUID Generator is a tool that creates unique identifiers that can be used in software applications, databases, and distributed systems. These 128-bit identifiers are designed to be globally unique, meaning the same UUID will never be generated twice, even across different systems.
Our UUID Generator supports multiple versions: UUID v4 (random), UUID v1 (time-based), and UUID v5 (namespace-based).
UUID Versions Explained
UUID v4 (Random)
The most common UUID version. Generated using cryptographically secure random numbers. Suitable for most use cases where uniqueness is needed without any coordination.
UUID v1 (Time-based)
Generated using the current timestamp and a random node identifier. Can be sorted by creation time but may expose privacy concerns as it reveals when and where the UUID was created.
UUID v5 (Namespace-based)
Generated using a namespace identifier and a name, using SHA-1 hashing. The same namespace and name will always produce the same UUID, making it useful for creating deterministic identifiers.
Frequently Asked Questions (FAQ)
Are these UUIDs cryptographically secure?
UUID v4 uses the Web Crypto API's cryptographically secure random number generator, making it suitable for security-sensitive applications.
Can I generate multiple UUIDs at once?
Yes! You can generate between 1 and 100 UUIDs at once using the quantity selector.
Is this tool free?
Yes, the UUID Generator is completely free to use without any limits or restrictions.