Convert JSON to C# Classes Online (Free)
Convert JSON into C# classes (properties) ready for deserialization, in your browser.
Uses System.Collections.Generic.List for arrays.
🔒 100% client-side — no data sent
Generate C# classes with typed properties from your JSON, ready for deserialization with System.Text.Json or Newtonsoft. Everything happens 100% in your browser, so your data never leaves your machine. A handy way to speed up API integration in your .NET projects.
What is it for?
- ▸ Create C# models to deserialize an API response
- ▸ Generate typed DTOs for an ASP.NET project
- ▸ Map a JSON config file to strongly typed objects
- ▸ Avoid hand-writing repetitive nested classes
FAQ
How do I turn JSON into a C# class?
Paste the JSON and the tool infers the types and generates C# classes with their properties, ready to copy straight into Visual Studio or your IDE.
Are the classes compatible with System.Text.Json?
Yes, the generated classes use standard properties that work with both System.Text.Json and Newtonsoft.Json without extra setup.
Does the tool handle nested objects and arrays?
Yes, it automatically creates a separate class for each nested object and infers the element type of arrays.