UUID生成ツール

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はじめに

UUID Generator — Generate v4 UUIDs (single or bulk). Enter How many to get an instant, accurate result.

計算式

Generates version-4 (random) UUIDs per RFC 4122: 122 random bits plus fixed version/variant bits, formatted as 8-4-4-4-12 hex digits.

ステップごとの説明

Enter the How many.
Click Calculate to see your result instantly.

実例

Example: With How many = 5, the UUID Generator gives Uuids: 0916c6b9-47fb-483f-b9e9-76d59266e2ac, d793cb4c-bd12-4342-866a-a2f0b7b3dc4e, b5a5a728-6e91-4a99-8dbf-7e14df3b5f2b, 17b322ab-3fc6-4ee6-b86d-b17d382adff9, 74f02694-f3a5-409d-9239-4252ae2b747f.

よくある質問

How unique are these UUIDs?

Collision probability is astronomically low — practically unique for any real-world use.

Can I generate multiple at once?

Yes, up to 1000 per request.

What inputs does the UUID Generator need?

You'll need to provide: How many. All fields use sensible defaults, so you can see a working example immediately and then adjust the values to match your own numbers.

How accurate is the UUID Generator?

The UUID Generator applies the formula exactly as calculated — Generates version-4 (random) UUIDs per RFC 4122: 122 random bits plus fixed version/variant bits, formatted as 8-4-4-4-12 hex digits. — so results are precise for the inputs you provide. Accuracy depends on entering correct, realistic input values.

Is the UUID Generator free to use?

Yes, the UUID Generator is completely free, requires no signup, and runs instantly in your browser.