Is a GUID different from a UUID?

They use the same underlying format (a 128-bit value); GUID is simply Microsoft's name and traditional braces-and-uppercase formatting convention for it.

Is my generated GUID sent anywhere?

No — it is generated and displayed entirely in your browser.

Can I use a GUID as a UUID?

Yes — remove the braces and lowercase it (or use the dedicated UUID Generator) to get standard UUID formatting.

Can I generate more than 100 GUIDs at once?

The tool is capped at 100 per generation — run it again for more.

Are GUIDs case-sensitive?

No — GUIDs are typically treated case-insensitively by the systems that consume them, though uppercase is the traditional display convention.

Do I need braces for a SQL Server uniqueidentifier column?

SQL Server accepts GUID values with or without braces; check your specific tool or driver's expected format.

Identifier & Random Tools

GUID Generator

Generate GUIDs in the format commonly used by Windows and .NET applications, with optional braces and uppercase.

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Runs in Your Browser
Instant Results
100% Private

How many

Wrap in { braces } Uppercase

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What Is a GUID?

A GUID (Globally Unique Identifier) is Microsoft's name for the same concept as a UUID — a 128-bit value used as a unique identifier — traditionally written wrapped in curly braces and in uppercase, such as {3F2504E0-4F89-11D3-9A0C-0305E82C3301}, the format expected by many Windows and .NET APIs.

This tool generates the same underlying random 128-bit value as the UUID Generator, but defaults to the classic GUID formatting so it drops straight into a .NET project, a Windows registry key, or a COM component definition without needing manual reformatting.

Who Uses This Tool?

For Business

Generate a GUID for a new COM component or Windows registry entry.

For Personal Use

Generate a GUID for a personal .NET project.

For Students

Learn the difference between GUID and UUID formatting for a course.

For Offices

Generate reference identifiers formatted for Windows-based systems.

Why Use This Tool

Key Features

Classic GUID Formatting

Defaults to braces and uppercase, matching Windows/.NET conventions.

Bulk Generation

Generate up to 100 GUIDs at once.

Cryptographically Random

Uses your browser's Web Crypto API for true randomness.

100% Private

Generated entirely in your browser — nothing is transmitted.

The Payoff

Benefits

Ready for Windows/.NET

Default formatting matches what Windows and .NET APIs expect.

No Collisions in Practice

Random GUIDs are effectively guaranteed to be unique.

Generate in Bulk

Create many GUIDs at once for seeding test data or components.

Step by Step

How to Use GUID Generator

Set Quantity & Format

Choose how many GUIDs and whether to include braces or uppercase.

Click Generate GUID

New random GUIDs appear instantly.

Copy the Result

Use the Copy button to grab all generated GUIDs.

Specifications

Technical Details

Detail	Value
Input	Generated text output, no input required
Processing	Up to 100 GUIDs per generation
Output	Version 4 (random) GUIDs using your browser's Web Crypto API

You Can Verify This

Privacy & Security

What actually happens to your file when you use this tool.

100% Client-Side

This tool runs entirely inside your browser using JavaScript — nothing you type or generate is ever sent anywhere.

No Upload, Ever

There is no file upload and no server processing step — your data never leaves your device.

Works Offline

Once this page has loaded, the tool keeps working even without an internet connection.

Nothing Stored

Nothing you enter is saved on our servers — refreshing the page clears everything.

No Tracking of Your Input

We have no way to see what you type, generate or convert with this tool.

Get Better Results

Tips

Keep Braces for Registry Entries

Windows registry GUID keys typically expect the curly-brace format.

Drop Braces for Code Constants

Some .NET APIs accept a plain, unbraced GUID string — disable braces if so.

Frequently Asked Questions