Developer UUID tools
GUID Generator
Generate GUIDs for .NET, Windows tooling, databases, APIs, and test data. Output can be uppercase, lowercase, hyphenated, or wrapped in braces.
GUID generator
Create GUID values using the same 128-bit format as UUIDs, with optional uppercase output and braces for C# or Windows-style workflows.
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 vs UUID
GUID and UUID usually describe the same 128-bit identifier format. GUID is the term many Microsoft and .NET APIs use, while UUID is the standards-oriented term used across many platforms.
In most developer workflows, a generated GUID can be treated as a UUID v4 unless a specific platform requires a different representation.
C# Guid.NewGuid() example
In C#, Guid.NewGuid() creates a new random GUID. Convert it to a string when you need to store or transmit the identifier.
using System;
Guid id = Guid.NewGuid();
string value = id.ToString();
Console.WriteLine(value);FAQ
Is a GUID different from a UUID?+
The terms often refer to the same 128-bit identifier format. GUID is common in Microsoft and .NET documentation.
Can this tool add braces around a GUID?+
Yes. Enable the braces option to format output like {xxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx}.
Are GUIDs generated locally?+
Yes. GUID generation happens in your browser with crypto APIs and is not sent to a server.