UUID Generator

Generate UUID v4, v7, and v1 — single or batch up to 100, copy all, or download as a .txt file.

Count

1–100 UUIDs per batch

Uppercase

ABCDEF instead of abcdef

Hyphens

Standard 8-4-4-4-12 format

Generated0 UUIDs

Click Generate to produce UUIDs.

What do v4 / v7 / v1 mean?

UUID v4

Fully random. The most common choice. 122 bits of entropy from a CSPRNG.

UUID v7

Time-ordered. 48-bit Unix millisecond timestamp + 74 random bits. Sorts naturally and is friendly as a database primary key.

UUID v1

Time-based with a node identifier. We use a random multicast node id, never your real MAC address, so nothing about your device leaks.

Generated entirely in your browser using the Web Crypto API. Nothing leaves your device.

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