UUID / GUID Generator
Generate cryptographically secure UUIDs (v4) instantly. Bulk generate up to 100 at once. 100% client-side.
Frequently Asked Questions
What is a UUID?
A UUID (Universally Unique Identifier) is a 128-bit number used to uniquely identify information in computer systems. Version 4 UUIDs are randomly generated and have a negligible probability of collision.
What is the difference between UUID and GUID?
UUID and GUID (Globally Unique Identifier) are essentially the same thing. UUID is the standard term, while GUID is Microsoft's term. Both are 128-bit identifiers.
Are these UUIDs cryptographically secure?
Yes. This tool uses the Web Crypto API (crypto.getRandomValues) which provides cryptographically strong random values.