JSON to C# Converter

Generate C# POCO classes instantly from your JSON objects for .NET development.

Input JSON

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{
  "id": 1,
  "name": "Product Name",
  "isActive": true,
  "tags": ["new", "sale"],
  "details": {
    "sku": "123-ABC",
    "weight": 1.5
  }
}

{
  "id": 1,
  "name": "Product Name",
  "isActive": true,
  "tags": ["new", "sale"],
  "details": {
    "sku": "123-ABC",
    "weight": 1.5
  }
}

Generated C#

Generate C# Model Classes from JSON in Seconds

Writing C# POCO classes by hand for every API response is tedious and error-prone. This converter analyzes your JSON structure, infers .NET data types, and produces ready-to-use class definitions — saving you hours of manual model creation for .NET applications.

Instant POCO Generation

Why Use This Tool?

Skip Manual Model Writing

Paste any JSON and get strongly-typed C# classes instantly — no manual property declaration required.

Smart Type Inference

Automatically maps JSON types to the correct .NET equivalents: string, int, double, bool, DateTime, and List<T>.

Nested Object Support

Deep JSON hierarchies generate the full class tree, with child classes for nested objects and typed lists for arrays.

100% Private

All code generation runs locally in your browser. Your JSON data is never sent to or stored on any server.

How this JSON to C# Converter works

This code generation tool automates the creation of C# Classes (POCOs) from JSON objects. It analyzes the JSON structure, infers data types (string, int, bool, DateTime, List), and generates corresponding C# class definitions with proper property naming conventions. It speeds up backend development by instantly creating the data models needed to deserialize JSON API responses in .NET applications.

How to use this JSON to C# Converter

Paste JSON

Paste the JSON object whose structure you want to convert into C# classes.

Generate Classes

The tool analyzes the JSON, infers .NET data types, and generates POCO class definitions with proper property names.

Copy C# Code

Copy the generated classes into your .NET project and use them to deserialize JSON API responses.

Example Usage

Generate a C# POCO class with inferred int, string, bool, and List<int> properties from a JSON object.

Input

{"userId":1,"name":"Alice","isActive":true,"scores":[95,87,102]}

Output

public class Root { public int UserId { get; set; } public string Name { get; set; } public bool IsActive { get; set; } public List<int> Scores { get; set; } }

Frequently Asked Questions

What is a POCO class in C#?

POCO stands for Plain Old CLR Object. It is a simple C# class with properties that map to JSON keys, used to deserialize JSON data from APIs into strongly-typed .NET objects.

How does the converter infer C# data types?

The converter inspects JSON value types: strings become string, numbers become int or double, booleans become bool, arrays become List<T>, and nested objects generate child classes.

Does it handle nested JSON objects and arrays?

Yes. Nested objects generate additional child classes, and arrays map to List<T> where T is the inferred element type. Deep nesting generates the full class hierarchy.

Can I use these classes with System.Text.Json and Newtonsoft.Json?

Yes. The generated POCOs work with both System.Text.Json and Newtonsoft.Json. Add [JsonProperty] or [JsonPropertyName] attributes if property naming differs between JSON and C# conventions.

Is this JSON to C# converter secure?

Yes. All code generation runs entirely in your browser. Your JSON data is never sent to or stored on any server.

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The JSON to C# Converter is maintained by CodeItBro. We aim to provide the best free developer tools on the web. If you have feedback or suggestions, please visit our contact page.

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