◨ DEVELOPER Updated July 25, 2026

UUID Generator

Generate random UUID v4 values instantly, one per line.

How many
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How it works

Each UUID is produced from crypto.getRandomValues in your browser, then formatted as a version 4 identifier with the correct version and variant bits. Nothing is sent to a server, so the values are yours alone.

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Frequently asked questions

Are these UUIDs unique?

UUID v4 draws 122 random bits, so a collision is astronomically unlikely — you would need billions of UUIDs before the risk becomes measurable.

Can I use them in a database?

Yes. UUID v4 is the usual choice for primary keys, request IDs, and idempotency keys when you cannot coordinate with a central counter.

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