GUID Generator
FreeGenerate globally unique identifiers (GUIDs)
About GUID Generator
GUIDs are the identifier of choice across .NET, SQL Server, the Windows API, and COM, and you often just need one to paste into a config, a registry entry, or a test record. This generator hands you a globally unique identifier instantly, formatted the way those ecosystems expect.
A GUID is a 128-bit value rendered as hyphen-separated hexadecimal, the same structure as a UUID but commonly written in the Microsoft style. Click to generate, then copy. The tool runs in your browser with no signup, no cost, and no extra characters wrapped around the value, just the GUID you came for, ready to use.
Common uses
- Generate a GUID for a .NET project, assembly attribute, or class identifier
- Create unique keys for SQL Server uniqueidentifier columns and seed data
- Produce identifiers for Windows registry entries or COM component IDs
- Grab a quick GUID for config values, feature flags, or test records
How to use
- 1
Configure options
Set your preferences using the options panel below.
- 2
Click Generate
Click the process button to generate your result instantly.
- 3
Copy or download
Copy the result to clipboard or download it directly to your device.
Why ToolHub?
- Instant generation
- Copy-ready output
- No login required
FAQ
Is a GUID the same as a UUID?
Functionally yes, both are 128-bit identifiers. GUID is the term used mainly in Microsoft ecosystems, while UUID is the equivalent term from the RFC standard.
What format is the output?
A standard hyphen-separated hexadecimal string, the format expected by Windows, .NET, and SQL Server.
How unique are they?
GUIDs are designed to be globally unique, so the chance of two randomly generated values colliding is negligibly small.
Can I use GUID Generator on mobile?
Yes — ToolHub is fully responsive and works on iPhone, Android, tablets and all modern browsers. No app install needed.