UUID v4 Generator
Generate random RFC 4122 UUIDs (version 4). Perfect for identifiers in apps and databases.
UUID Generator FAQ
What is a UUID? ＋
A UUID (Universally Unique Identifier) is a 128-bit value used to uniquely identify information without central coordination. UUID v4 is randomly generated.
What is UUID v4 used for? ＋
UUID v4 is often used as identifiers for database records, API keys, session tokens, or other entities that need globally unique IDs.
Is UUID v4 guaranteed to be unique? ＋
UUID v4 has 122 random bits, making collisions astronomically unlikely. It is effectively unique for all practical purposes.
Can I use UUIDs in URLs or QR codes? ＋
Yes. UUIDs are URL-safe and can be encoded into QR codes for easy sharing or scanning.
Is this tool secure? ＋
Yes. All UUIDs are generated locally in your browser using the Web Crypto API — nothing is sent to our servers.