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UUID Generator

Generate v4 UUIDs / GUIDs in bulk, copy with one click.

  • ⚙️ Generator
  • ✓ Free
  • ✓ No sign-up
  • ✓ Private — runs in your browser
  • ✓ Any device

Click any UUID to copy it. v7 UUIDs are time-ordered — they sort by creation time, ideal for database keys.

Why you’ll love UUID Generator

Instant & freeNo signup, no paywall, no limits — UUID Generator works the moment the page loads.
Completely privateEverything runs in your browser. Nothing you enter is ever uploaded or stored on a server.
Works on any deviceFully responsive and touch-friendly — use it on your phone, tablet or desktop.
Endless variationsGenerate as many as you like, then copy or download in one click.

How to use it

  1. 01

    Open it

    No download and no login — the tool is ready right at the top of this page.

  2. 02

    Use it

    Enter your details or start interacting. Everything updates live as you go.

  3. 03

    Get your result

    Copy, download or share your result in a single tap. That’s it.

About UUID Generator

A UUID generator creates universally unique identifiers (UUIDs), also known as GUIDs, that are guaranteed to be unique across space and time. This free tool runs entirely in your browser—no signup required, and your generated UUIDs never leave your device. Generate single or bulk v4 UUIDs instantly with one-click copying, perfect for developers who need unique identifiers without relying on external services.

Version 4 UUIDs are randomly generated and work well for most use cases where you need a unique identifier that isn't tied to timestamps or network addresses. Whether you're building database schemas, REST APIs, testing frameworks, or distributed microservices, a UUID generator eliminates tedious manual ID creation and ensures collision-free identifiers across your entire system.

Because this UUID generator runs entirely on your device, your generated IDs stay private and never leave your browser. The tool works offline once loaded, requires zero signup, and needs nothing but your browser. It's perfect for developers, QA engineers, and anyone building systems that require reliable, conflict-free unique identifiers.

Popular uses

  • ✦ Generating primary keys for database tables during development and testing
  • ✦ Creating unique identifiers for microservices and distributed system components
  • ✦ Producing test data sets for applications that require unique IDs
  • ✦ Generating tracking codes or request IDs for API logging and debugging
  • ✦ Seeding databases with unique user, transaction, or entity identifiers

Frequently asked questions

What is a UUID and why do I need one?
A UUID (universally unique identifier) is a 128-bit value designed to be globally unique without central coordination. You need UUIDs for database primary keys, API request tracking, microservice identifiers, document IDs, or any system where you must guarantee uniqueness across distributed components.
What's the difference between a UUID and GUID?
GUID stands for Globally Unique Identifier—it's the same thing as a UUID, just different terminology. Microsoft uses 'GUID' in Windows and .NET environments, while 'UUID' is the standard term elsewhere. Both refer to the same 128-bit identifier format, and v4 UUIDs work perfectly as GUIDs.
Can I use this UUID generator offline?
Yes. This tool runs entirely in your browser, so it generates UUIDs offline once the page loads. No internet connection needed. All processing happens on your device, and nothing is sent to any server—your IDs stay completely private.
How many UUIDs can I bulk generate at once?
You can generate as many UUIDs as you need in a single batch. The tool handles bulk generation efficiently, so you can seed databases, populate config files, or create large test data sets without hitting limits. Simply copy and paste the results wherever you need them.
Is UUID Generator free to use?
UUID Generator is 100% free — no signup, no watermarks and no usage limits. It’s one of 200+ free tools we build and give away.
Can I generate as many as I want?
Yes — there are no limits. Generate, regenerate and export as much as you like, completely free.

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