UUID Generator – Generate Random UUID/GUID Instantly

Create random UUID v4 identifiers (also known as GUIDs) with one click. Customize the format, generate multiple UUIDs at once, and copy or download the list. All generation happens securely in your browser.

Generation Settings

Number of UUIDs

Case Format

Remove hyphens Surround with braces { }

What is a UUID?

A UUID (Universally Unique Identifier) is a 128‑bit number used to uniquely identify information in computer systems. You may also see it called a GUID (Globally Unique Identifier). The standard format is xxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx (32 hexadecimal digits, four hyphens).

Why Use a UUID Generator?

Database Keys: Create unique primary keys without auto‑increment integers.
API Development: Generate unique request IDs, session tokens, or resource identifiers.
Testing: Populate test databases with realistic, unique identifiers.
File Naming: Prevent filename collisions when saving uploaded files.
Distributed Systems: Generate IDs that are unique across multiple servers without coordination.

How to Use the UUID Generator

Set the count: Choose how many UUIDs you need (1 to 500).
Pick a format: Uppercase or lowercase, with or without hyphens. You can also wrap each UUID in curly braces if needed.
Click "Generate UUID(s)": The UUIDs appear instantly in the output area.
Copy or download: Use the copy button to send them to your clipboard, or download a .txt file.

Pro Tip: For database use, lowercase without braces is the most common format. If you're working with Microsoft technologies (like .NET or SQL Server), you may see uppercase with braces — select the "Uppercase" option and check "Surround with braces".

UUID v4: Randomness and Uniqueness

Our generator creates UUID v4 identifiers, which are generated using random numbers. The probability of generating a duplicate UUID is so astronomically low that for practical purposes each one can be considered unique. The randomness is sourced from your browser's secure cryptographic pseudorandom number generator, making these UUIDs suitable for production use.

From the Textify Team

We built this UUID generator because every developer needs a quick way to generate unique identifiers. No ads, no signup, no data collection — just fast, private UUID generation that works offline once the page loads. Bookmark it for your next project.

Frequently Asked Questions

What is the difference between UUID and GUID?

UUID (Universally Unique Identifier) and GUID (Globally Unique Identifier) are essentially the same thing. GUID is Microsoft's term for UUID. Both follow the same 128‑bit format and are interchangeable.

Can I generate UUIDs without hyphens?

Yes, check the "Remove hyphens" option. The output will be a continuous string of 32 hexadecimal characters.

Are the generated UUIDs truly random?

They use your browser's cryptographic pseudorandom number generator (Crypto.getRandomValues). While not truly random in a mathematical sense, they are unpredictable enough for virtually all practical applications.

Is there a limit on how many UUIDs I can generate?

The tool allows up to 500 UUIDs per click. Generating very large numbers (10,000+) might slow down your browser, but for typical use cases 500 is more than enough.

Is my data private?

Absolutely. Everything happens in your browser. Nothing is sent to a server, and no data is stored or tracked.

Does this tool work offline?

Yes, once the page loads, you can disconnect from the internet and still generate UUIDs. It's purely client‑side.