UUID Generator

Version

UUID v4 (random) UUID v7 (time-ordered)

Uppercase With braces {} No hyphens

About This UUID Generator

Generate universally unique identifiers (UUIDs) instantly in your browser. UUIDs are 128-bit identifiers that are guaranteed to be unique across all space and time.

UUID Versions

UUID v4 — Randomly generated. The most common version. 122 bits of randomness provide virtually zero collision probability.
UUID v7 — Time-ordered (RFC 9562). Embeds a Unix timestamp in the first 48 bits, making UUIDs naturally sortable by creation time. Ideal for database primary keys.

Features

Cryptographically Secure — Uses crypto.getRandomValues()
Bulk Generation — Generate up to 100 UUIDs at once
Format Options — Uppercase, braces, no hyphens
Privacy — 100% client-side, no data leaves your browser

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