UUID Generator

Generate UUID v1, v4, and v7 with bulk generation, format options, and export capabilities.

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UUID Breakdown

Version4
VariantRFC 4122

Bulk Generation

How It Works

1

Choose a version

Select UUID v4 (random), v1 (timestamp-based), or v7 (sortable timestamp) based on your needs.

2

Generate one or many

Generate a single UUID or use bulk mode for up to 1,000 at once.

3

Format and export

Toggle uppercase/lowercase and hyphens. Copy individual UUIDs or export bulk results as TXT or CSV.

FAQ

v4 (random) for most cases. v7 if you need time-sortable IDs (great for database primary keys). v1 if you need timestamp extraction. If you need a deterministic ID derived from input data, use the hash generator instead.
Yes. v4 UUIDs use crypto.randomUUID() or crypto.getRandomValues(), which are cryptographically secure.
Theoretically yes, but the probability is astronomically low — about 1 in 2^122. You'd need to generate billions per second for centuries.

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Built & Maintained by Varstatt

Varstatt is a one-person product studio run by Jurij Tokarski, product engineer since 2011. These tools are free and open — no signup, no catch.