Generate random UUID v4 identifiers. Create single UUIDs or generate multiple UUIDs in bulk for your projects.
A UUID (Universally Unique Identifier) is a 128-bit number used to uniquely identify information in computer systems. UUID version 4 generates random identifiers following the format 8-4-4-4-12 hexadecimal characters. UUIDs are used extensively in software development for database primary keys, session identifiers, transaction IDs, and distributed system coordination where guaranteed uniqueness is essential without a central authority.
Simply click "Generate UUID" to create a new random UUID v4. Use "Copy" to copy it to your clipboard. Need multiple UUIDs at once? Click "Generate 5" or "Generate 10" to create a batch — the first UUID appears in the display area while all generated UUIDs are listed in the bulk output section below.
Our UUID generator creates cryptographically-random version 4 UUIDs directly in your browser. No data is sent to any server, ensuring the UUIDs you generate are truly private. Perfect for developers who need unique identifiers for database records, API keys, file names, or session tokens. Free, fast, and works offline — exactly what you need when writing code.