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🔑 UUID Generator

Generate UUID v4 in batch with format options

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Case

Hyphens

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UUID (Universally Unique Identifier) is a 128-bit globally unique identifier widely used for database primary keys, distributed systems, and API request tracking. This tool generates RFC 4122 compliant UUID v4 (random version) online, with options for case switching, hyphen formatting, and batch generation (up to 100). All generation uses the browser's built-in cryptographic random number generator (crypto.randomUUID / crypto.getRandomValues), running entirely client-side with no data sent to any server.