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UUID Generator Free

Generate unique UUIDs v4. Works entirely in your browser. Your files never leave your device.

Open UUID Generator Free
No file uploadNo account needed100% privateWorks offlineAlways free

What is UUID Generator?

UUID Generator is a free browser-based tool that runs entirely in your browser. No file uploads, no account needed, and no data stored. Fast, private and always free.

This tool lets you generate unique uuids v4 without installing any software or creating an account. Everything runs directly in your browser for maximum privacy. Your files and data never leave your device.

Use it for quick tasks at any time from any device — desktop, tablet or mobile. No subscription, no ads, no limits.

⚡
Instant results
No server processing or wait
🔒
100% private
Files stay on your device
💰
Always free
No subscription or fees
📱
Mobile ready
Works on any device

How to use UUID Generator

  1. Open the UUID Generator tool
  2. Enter your input data or upload your file
  3. Configure the settings for your use case
  4. Download or copy the result

Why use OnlineToolsPlus?

OnlineToolsPlus processes everything locally in your browser. Your files, text and data never leave your device, which eliminates server-side privacy risks. With 200+ free tools covering PDF, image, AI writing, developer utilities, calculators, SEO, color tools and more, there is no need to juggle multiple subscriptions or install software.

Frequently asked questions

What is a UUID used for?
Database primary keys, API request identifiers, session tokens, file names, and any other situation requiring a globally unique identifier that can be generated independently on any system.
Is a UUID version 4 truly unique?
The probability of two randomly generated UUID v4s being identical is approximately 1 in 5.3 times 10 to the 36th power. For all practical purposes, they are unique.
How is this different from the developer UUID tool?
Both generate identical UUID v4 values. This generator is located in the Generators category for discovery, while the developer tool is in the Developer Tools category.
Can I generate a batch of UUIDs?
Yes. Specify the quantity and download or copy them all.
Does it work offline?
Yes.
What format is the UUID output?
Standard hyphenated format: xxxxxxxx-xxxx-4xxx-yxxx-xxxxxxxxxxxx where x is a random hex digit.

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Last updated: April 11, 2026

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