Developer UUID tools
C# GUID Generator
Generate GUIDs for C# and .NET projects, then review the standard Guid.NewGuid, Guid.Parse, and Guid.TryParse workflows.
C# GUID generator
Create GUID values for .NET tests, models, migrations, and API examples.
123e4567-e89b-42d3-a456-426614174000 123e4567-e89b-42d3-a456-426614174001 123e4567-e89b-42d3-a456-426614174002 123e4567-e89b-42d3-a456-426614174003 123e4567-e89b-42d3-a456-426614174004 123e4567-e89b-42d3-a456-426614174005 123e4567-e89b-42d3-a456-426614174006 123e4567-e89b-42d3-a456-426614174007 123e4567-e89b-42d3-a456-426614174008 123e4567-e89b-42d3-a456-426614174009
Generate 1 to 1000 IDs per batch.
Generated values stay in your browser. This page does not send UUIDs or GUIDs to a server for generation.
Guid.NewGuid() example
In .NET, Guid.NewGuid() creates a new GUID value. Convert it to a string for transport or display.
Guid id = Guid.NewGuid();
Console.WriteLine(id.ToString());Parse and validate GUIDs
Use Guid.Parse when invalid input should throw. Use Guid.TryParse when you want a safe validation branch.
Guid parsed = Guid.Parse("123e4567-e89b-42d3-a456-426614174000");
if (Guid.TryParse(input, out Guid value))
{
Console.WriteLine(value);
}Common C# GUID mistakes
Do not treat an empty string as Guid.Empty. Guid.Empty is the all-zero GUID value. Use TryParse for user input and external payloads.
FAQ
How do I generate a GUID in C#?+
Call Guid.NewGuid() to create a new GUID value in .NET.
How do I validate a GUID in C#?+
Use Guid.TryParse(input, out Guid value) for safe validation.
Is a C# GUID the same as a UUID?+
In most practical cases, yes. GUID is the term used by Microsoft and .NET APIs for the same 128-bit identifier format.