Developer Tools

UUID Generator

Generate random version 4 UUIDs in bulk — instantly and privately.

Updated June 2026

0 UUIDs · version 4

How to use the UUID Generator

  1. 1

    Choose how many

    Enter the number of UUIDs you need, from 1 up to 100.

  2. 2

    Generate

    Click Generate to create a fresh batch of random version 4 UUIDs instantly.

  3. 3

    Copy the result

    Hit Copy to grab the whole list, one UUID per line. Nothing is saved.

About this tool

A UUID (Universally Unique Identifier), also called a GUID, is a 128-bit value written as 32 hexadecimal digits in the familiar 8-4-4-4-12 pattern, like f47ac10b-58cc-4372-a567-0e02b2c3d479. Version 4 UUIDs are almost entirely random, which makes them practically guaranteed to be unique without any central coordination. Developers reach for them constantly: primary keys, idempotency keys, request and trace IDs, file names, and session tokens.

This generator creates version 4 UUIDs using your browser's built-in cryptographically secure random number generator, so the values are suitable wherever you need unpredictable, collision-resistant identifiers. Choose how many you need — anywhere from one to 100 — and click Generate to produce a fresh batch instantly. Hit Copy to grab the whole list, one UUID per line, ready to paste into code, a seed file, or a spreadsheet.

Because generation happens entirely client-side, no UUID is ever sent to a server, logged, or stored. Every batch is brand new and disappears the moment you leave the page, which makes this a quick, dependable utility for both throwaway test data and real identifiers you are about to commit to a database.

Examples

Input

Count: 1

Output

f47ac10b-58cc-4372-a567-0e02b2c3d479

One random version 4 UUID (each run produces a different value).

Input

Count: 3

Output

9b2e4c1a-7d3f-4a6b-8c5e-1f0d2a3b4c5d 3e7a1b9c-2d4f-4e8a-9b1c-6d5e4f3a2b1c c4d5e6f7-8a9b-4c0d-1e2f-3a4b5c6d7e8f

Three UUIDs, one per line — values are random each time.

Common uses

  • Generating a primary key or surrogate ID for a new database row or document
  • Creating an idempotency key to safely retry a payment or API request without duplicates
  • Producing request, trace, or correlation IDs for logging and distributed tracing
  • Seeding test fixtures or mock data with unique identifiers during development
  • Naming uploaded files or temporary objects so they never collide in storage
  • Issuing opaque session, invite, or reset tokens that are hard to guess

Frequently asked questions

Is this UUID generator free?+

Yes. It is completely free with no sign-up, no limits, and no watermarks.

What version of UUID does it generate?+

It generates version 4 UUIDs, which are random. Each one is produced by the browser's crypto.randomUUID() and follows the standard 8-4-4-4-12 hexadecimal format.

How many UUIDs can I generate at once?+

You can generate anywhere from 1 to 100 UUIDs in a single batch. Enter a number in the field and click Generate.

Are the UUIDs truly random and unique?+

They use your browser's cryptographically secure random source. Version 4 UUIDs have so much entropy that collisions are vanishingly unlikely, so they are safe to treat as unique.

Is my data uploaded or stored anywhere?+

No. Every UUID is generated locally in your browser and is never sent to a server, logged, or stored.

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Embed this tool

Free to use on your own site — it stays fast and private for your visitors.

Paste this where you want the tool to appear:

<iframe src="https://hypercho.com/embed/uuid-generator" title="UUID Generator by Hypercho" width="100%" height="560" style="border:1px solid #d8cec3;border-radius:16px;max-width:720px" loading="lazy"></iframe>
<p style="font:13px sans-serif"><a href="https://hypercho.com/tools/uuid-generator" target="_blank" rel="noopener">UUID Generator</a> by <a href="https://hypercho.com" target="_blank" rel="noopener">Hypercho</a></p>
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