What is this tool?
A client-side utility to generate RFC4122 version 4 compliant universally unique identifiers (UUIDs) or GUIDs instantly. You can generate multiple IDs, customize character casings, and toggle hyphens.
When to use it?
Use this generator when you need unique keys for databases, API testing tokens, transaction tracking IDs, or system component session identifiers.
How does it work?
This tool uses the browser-native cryptographically secure random number generator (Web Crypto API `crypto.getRandomValues`) to ensure random randomness compliant with RFC4122 specifications.
Example Conversions
Generate 1 UUID (Uppercase, with Hyphens)
9B1DE2F8-0D32-475C-9A8B-3FA41829B245
Frequently Asked Questions
What is a UUID version 4?
A Version 4 UUID is a universally unique identifier generated using random numbers. It contains 122 bits of random data, making collisions statistically impossible.
Is a UUID the same as a GUID?
Yes. GUID is Microsoft's terminology for UUID. They both conform to the same formatting structure.