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UUID Generator - Generate UUIDs Online

Generate single or multiple UUIDs instantly. Supports UUID v1 (Timestamp) and v4 (Random).

Select a UUID version and click Generate to create UUIDs

What is a UUID Generator?

A UUID (Universally Unique Identifier) generator is a free online tool that creates unique identifiers in seconds. UUIDs are 128-bit values used to uniquely identify information in computer systems and databases. Our tool supports multiple UUID versions and allows you to generate single or batch UUIDs effortlessly.

Why Use a UUID Generator?

UUIDs are essential for creating unique identifiers in distributed systems without coordination. They are commonly used in databases, APIs, web applications, microservices, and cloud platforms to ensure data uniqueness and prevent conflicts across systems.

  • Generate UUIDs instantly
  • Support for UUID v1 and v4
  • Create single or multiple UUIDs
  • Copy and download UUIDs
  • No installation required
  • Works offline in browser

UUID Versions

Our UUID generator supports multiple UUID versions:

  • UUID v1 (Timestamp-based): Generated using the current timestamp and MAC address. Useful for ordered IDs.
  • UUID v4 (Random): Generated using random values. Most commonly used due to high uniqueness probability.

Common UUID Use Cases

  • Database primary keys and unique identifiers
  • API request tracking and correlation IDs
  • User and session management
  • Distributed system coordination
  • File uploads and media asset identification
  • Microservices communication
  • Order and transaction tracking
  • Device and machine identification

Features

  • Generate 1 to 1000 UUIDs at once
  • Select between UUID v1 and v4
  • Copy individual UUIDs to clipboard
  • Copy all UUIDs at once
  • Download as JSON or TXT format
  • Quick generation buttons (1, 5, 10, 100 UUIDs)
  • Fully responsive design
  • No data stored or sent to servers

How to Use

  1. Select a UUID version (v1 or v4)
  2. Choose the number of UUIDs to generate
  3. Click the Generate button or use quick buttons
  4. Copy individual UUIDs or all at once
  5. Download as JSON or TXT if needed

Is This Tool Secure?

Yes. UUID generation happens entirely in your browser. Your data is never sent to servers or stored. All processing is done locally on your device, ensuring maximum privacy and security.

Browser Compatibility

The UUID generator works on all modern browsers including Chrome, Firefox, Safari, Edge, and mobile browsers. It is fully responsive and works seamlessly on desktop, tablet, and mobile devices.

🎥 Video Guide

❓ FAQs

What is a UUID?

A UUID (Universally Unique Identifier) is a 128-bit number used to uniquely identify information in computer systems. It's commonly used in databases, APIs, and distributed systems.

What is the difference between UUID v1 and v4?

UUID v1 is generated using timestamp and MAC address (ordered), while UUID v4 is randomly generated. v4 is more commonly used due to its high uniqueness and no dependency on system information.

Is this UUID generator free?

Yes. Our online UUID generator is completely free to use with no limits or registration required.

Can I generate multiple UUIDs at once?

Yes. You can generate from 1 to 1000 UUIDs in a single operation using the count selector or quick buttons.

How can I download the generated UUIDs?

You can download UUIDs as JSON or TXT format. Click the download buttons after generating UUIDs.

Can I use these UUIDs for production?

Yes. The UUIDs generated are cryptographically secure and suitable for production use in databases, APIs, and applications.

Is my data secure?

Yes. All UUID generation happens in your browser. No data is sent to servers or stored. Complete privacy and security.

What are UUIDs used for?

UUIDs are used for database primary keys, API request tracking, user identification, session management, distributed systems, file uploads, and order tracking.

Can I copy individual UUIDs?

Yes. Each generated UUID has a copy button for easy individual copying to clipboard.

Does this tool work offline?

Yes. The UUID generator works entirely offline. Once loaded, you can generate UUIDs without internet connection.

Is this UUID generator mobile friendly?

Yes. The tool is fully responsive and works seamlessly on desktop, tablet, and mobile devices.

How are UUID v1 values generated?

UUID v1 is generated using the current timestamp (60-bit precision) combined with the MAC address (48-bit) and a clock sequence (14-bit), ensuring uniqueness across time and machines.

How are UUID v4 values generated?

UUID v4 is generated using 122 random bits from a cryptographically secure random number generator, providing astronomically high probability of uniqueness.

Can I batch generate UUIDs?

Yes. Use the count input field or quick buttons (1, 5, 10, 100) to generate multiple UUIDs in one operation.

Which browsers support this tool?

The UUID generator works on Chrome, Firefox, Safari, Edge, and all modern browsers supporting JavaScript and the Crypto API.