UUID / GUID Generator
Generate secure, random Version 4 UUIDs instantly. Customize the format and bulk generate multiple IDs at once.
Generator Settings
Generated Output
Why use UUIDs?
In distributed systems, databases, and APIs, developers need a way to assign a unique ID to a record without having to check the database to see if that ID was already taken. Because the UUID namespace is so incomprehensibly large, you can generate an ID knowing that the chance of a collision is practically zero.
FAQs
What is a UUID / GUID?
A UUID (Universally Unique Identifier) or GUID (Globally Unique Identifier) is a 128-bit label used for identifying information in computer systems. They are virtually guaranteed to be unique across all devices and times without needing a central coordinator.
What version of UUID does this tool generate?
This tool generates Version 4 UUIDs, which are created using completely random (or pseudo-random) numbers. This is the most common version used in modern applications.
Are these UUIDs cryptographically secure?
Yes. They are generated using the browser's native Web Crypto API (crypto.randomUUID), which provides mathematically robust, cryptographically secure random values.