JSON to C# Class Converter
Convert your JSON responses into clean C# POJO classes instantly.
Input JSON
C# Output
// Your C# Class will appear hereFast & Client-Side
Conversion happens entirely within your browser. No data is sent to external servers.
Privacy Focused
Your raw JSON payloads and generated C# code remain 100% private and secure on your local machine.
.NET Ready
Generates modern, strongly-typed C# classes perfectly formatted for standard API integrations.
What is a JSON to C# Class Converter?
A JSON to C# class converter is a developer tool that automatically generates strongly-typed C# model classes (POCOs — Plain Old CLR Objects) from a JSON payload. Instead of manually writing class properties and figuring out data types, the converter infers all types from the JSON structure, handles nested objects, arrays, and nullable values — producing code ready to paste directly into your .NET project.
This tool runs entirely in your browser. When you paste a JSON payload, it is never transmitted to any server — all parsing and code generation happens locally using JavaScript.
How to Convert JSON to C# Classes
- Paste your JSON payload into the Input JSON box on the left.
- The converter instantly generates strongly-typed C# POCO classes on the right.
- Click Copy to copy the output to your clipboard.
- Paste directly into your .NET project — compatible with
System.Text.JsonandNewtonsoft.Json.
Supported Features
| Feature | Supported |
|---|---|
| Nested objects | ✅ Yes |
| Arrays / Lists | ✅ Yes — generates List<T> |
| Nullable types | ✅ Yes |
| System.Text.Json attributes | ✅ Yes — [JsonPropertyName] |
| Newtonsoft.Json attributes | ✅ Yes — [JsonProperty] |
| PascalCase property names | ✅ Yes — auto-normalized |
Frequently Asked Questions
Is my JSON data safe?
Yes. All processing happens entirely within your browser using JavaScript. No data is transmitted to any server. Your JSON payloads never leave your machine.
What is a POCO class in C#?
A POCO (Plain Old CLR Object) is a simple C# class with only properties — no special base classes, interfaces, or framework dependencies. It's the standard pattern for model classes in .NET applications.
Does this work with nested JSON?
Yes. The converter recursively processes nested objects and generates separate C# classes for each nested type, properly referencing them.
Is this compatible with System.Text.Json?
Yes. The generated C# classes include [JsonPropertyName] attributes compatible with .NET's built-in System.Text.Json serializer.
What happens with JSON arrays?
Arrays are converted to List<T> properties in C#, where T is inferred from the array element type.