UUID Generator Free RFC4122
UUID Generator & Identifier Utility
Generate RFC4122 compliant UUID Version 4 (random) and Version 1 (time-based) identifiers instantly. Supporting custom formats, bracket wraps, uppercase casing, and text download.
UUID Generation FAQs
What is a UUID?
A Universally Unique Identifier (UUID) is a 128-bit label used for information in computer systems. Under RFC 4122, UUIDs are mathematically guaranteed to be globally unique without coordinates coordination nodes.
What is the difference between UUID Version 4 and Version 1?
UUID Version 4 is generated purely using cryptographically secure random values (CSPRNG) and represents the most widely used configuration. UUID Version 1 is constructed from the system time clock stamp and the network node hardware address.
Are these generated UUIDs safe for database use?
Absolutely. Because the generation is handled local-client-side via standard window.crypto APIs, no data packet leaves your browser, avoiding collision risks or security sniffing leaks.