UUID Generator
Generate random v4 UUIDs or time-ordered v1-style UUIDs — one at a time or in bulk.
Runs 100% in your browser•Nothing is uploaded to a server•Free forever
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About this UUID generator
Hit Generate to get a cryptographically random version 4 UUID (RFC 4122), built with crypto.getRandomValues under the hood — the same randomness source used for cryptographic keys, not Math.random(). Set the count to more than one to generate a batch at once, one UUID per line, ready to copy. The v1-style option produces a time-ordered UUID that packs the current timestamp into the same fields a real RFC 4122 v1 UUID uses — but since browsers don't expose a real MAC address, it fills the node ID with random bytes instead of genuine hardware identifiers, so treat it as roughly time-sortable rather than a byte-for-byte spec-faithful v1 UUID. Everything runs locally in your browser — no UUID generated here is ever sent anywhere.
