utilitybelt.dev
Sponsored

UUID Generator

Generate UUIDs (v4 random or v7 timestamp-based) with configurable quantity, case, and formatting options.

Sponsored

What is UUID Generator?

The UUID Generator is a free, browser-based tool for developers who need to quickly generate Universally Unique Identifiers (UUIDs) for applications, databases, and APIs. Supports both UUID v4 (random) and UUID v7 (timestamp-based) formats. Customize the output with options for quantity, case (uppercase/lowercase), and hyphen formatting. All generation happens locally in your browser—no server calls, no signup, no tracking.

Common Use Cases

  • Generating unique IDs for database records
  • Creating session tokens or request IDs
  • Testing UUID validation logic
  • Generating placeholder IDs for development

Example: Input & Output

Sample Input

See the tool above for interactive examples.

Expected Output

The processed output will appear here instantly.

How to Use

  1. Step 1: Select the UUID version (v4 or v7)
  2. Step 2: Choose the quantity of UUIDs to generate
  3. Step 3: Select case (uppercase or lowercase) and hyphen formatting
  4. Step 4: Click 'Generate' to create the UUIDs
  5. Step 5: Copy the results or download as a text file

Frequently Asked Questions

Is this UUID generator free?

Yes, 100% free with no signup or account required.

What is the difference between UUID v4 and v7?

UUID v4 uses random generation, while UUID v7 includes a timestamp for time-based ordering. Use v7 for sortable IDs.

Are the generated UUIDs truly unique?

UUID v4 uses cryptographically strong random values, making collisions extremely unlikely. UUID v7 is also collision-resistant.

Can I generate UUIDs in bulk?

Yes, you can generate up to 1000 UUIDs at once using the quantity option.

Is this tool secure?

Yes, all generation happens locally in your browser using the Web Crypto API for strong randomness.

Privacy & Security

All data processing for the UUID Generator happens entirely on your local machine within your browser. No data is ever sent to our servers, ensuring your information remains private and secure. We believe in privacy by design, and our tools are built to be used without compromising your data.