UUID Generator

Bulk-generate v4 (random) or v7 (time-ordered) UUIDs locally in your browser. Cryptographically secure via crypto.getRandomValues. Nothing leaves your device.

SpecRFC 9562
Entropy122 bits
Network0 calls

Version

Format

Count

10 · UUID v4

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UUID v4

Random

122 random bits. Use when ordering or temporal locality doesn't matter. The default for most apps.

b4c5d2e8-9f3a-4d51-b8e4-7c1a2d9f8e60

UUID v7

Time-ordered

48-bit ms timestamp + 74 random bits. Sortable by creation time. Index-friendly for databases.

0190a6b1-7c2e-72d4-ae1c-3f8b2d9e4f10

Generated client-side. Zero network calls.