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UUID Generator

Generate random UUID v4 or time-ordered v7 in bulk.

Version

How to use

  1. 1Choose the UUID version: v4 (random) or v7 (time-ordered).
  2. 2Pick how many you need, up to 1,000.
  3. 3Choose the format: lowercase or uppercase, with or without hyphens or braces.
  4. 4Copy them all or download them as a text file.

Frequently asked questions

What is a UUID?

A UUID (or GUID) is a 128-bit ID like 3f2b8c1e-…, practically guaranteed to be unique. It's used for database keys, file names and API IDs.

v4 or v7 — which should I use?

v4 is fully random and the most common. v7 starts with a timestamp, so IDs sort by creation time, which is better for database indexes.

Are these UUIDs secure and unique?

They're created with your browser's cryptographically secure random generator. The chance of two v4 UUIDs colliding is astronomically small.

Is a GUID the same as a UUID?

Yes. GUID is Microsoft's name for the same thing. Use the braces format for {GUID} style.

Are the UUIDs stored anywhere?

No. They're generated in your browser and never sent to a server.

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