Text UtilitiesText GeneratorsFree Tool
GUID Generator
Generate a random RFC 4122 version 4 GUID/UUID using the browser's cryptographically secure random number generator, with the version and variant bits set correctly.
How to Use GUID Generator
- 1Click to generate a new GUID/UUID
- 2Copy it to your clipboard
- 3Generate again for a new one
Frequently Asked Questions
Yes — GUID (Globally Unique Identifier) is Microsoft's name for the same concept as UUID (Universally Unique Identifier); this tool generates standard RFC 4122 version 4 UUIDs, which work as GUIDs interchangeably.
Yes — it uses the Web Crypto API's crypto.getRandomValues() to fill all the random bits, then sets the version (4) and variant bits per the RFC 4122 spec, not the weaker Math.random().
With 122 random bits per UUID, the chance of ever generating a duplicate is negligible even across billions of generated IDs.
No — generation happens entirely in your browser.
Related Tools
Random Text Generator
Generate filler text built from a small pool of classic pangram sentences (sentences using every letter of the alphabet), 1-10 at a time.
Password Generator
Generate a random password using the browser's cryptographically secure random number generator, mixing uppercase, lowercase, digits, and symbols.
Random String Generator
Generate a random alphanumeric string using the browser's cryptographically secure random number generator — letters and digits only, no symbols.
Random Date Generator
Generate random dates between January 1, 2000 and December 31, 2030, shown in DD/MM/YYYY format.