JSON to C# converter

A developer-focused tool that converts JSON payloads into ready-to-use C# class models for deserialization and API integration seamlessly.

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2,900+
Total Calculations Run
< 15ms
Browser Execution Speed
100%
Client-Side Privacy
4.9 / 5.0
User Satisfaction

Worked Example & Common Values

Below is a sample worked calculation demonstrating how JSON to C# converter processes input data instantly inside your browser.

Sample Input Minified string: {"id":1,"status":"active","roles":["admin"]}
Computed Result { "id": 1, "status": "active", "roles": [ "admin" ] }
Execution Mode Client-Side In-Browser JS
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À propos de cet outil

This tool accepts a JSON string and a desired root class name to generate one or more C# classes that map directly to the input structure. It outputs POCOs with properties typed to match JSON values (strings, numbers, booleans, arrays, and objects) and creates nested types as needed. It can annotate properties with JsonPropertyName or JsonProperty depending on the chosen serializer, and it can enforce PascalCase naming by default. The output is ready to paste into a project, enabling straightforward deserialization with minimal boilerplate. Conceptually, the tool analyzes the JSON, resolves types recursively, and emits a set of strongly typed classes that preserve the data shape. It handles nullability, collections, and nested objects while offering optional namespace and serializer configuration. The unique value lies in combining accurate type inference with optional serializer metadata, reducing manual refactoring and improving maintainability for API clients and SDKs. Use cases include translating API responses into robust C# models, generating data contracts for SDKs, and scaffolding test fixtures that reflect realistic JSON payloads. Core features include automatic type mapping, nested class generation, attribute emission for naming fidelity, and multi-class outputs. It targets developers integrating JSON APIs into .NET applications and aims to minimize mismatch between JSON payloads and C# models.

Comment utiliser

  1. Provide inputs: paste a sample JSON payload and specify the root class name.
  2. Choose serializer: select System.Text.Json or Newtonsoft.Json to determine attribute style.
  3. Run generation: trigger the tool to produce one or more C# class definitions.
  4. Review outputs: copy generated code, adjust namespace if needed, and paste into a project.
  5. Validate: deserialize sample JSON in a quick test to verify property mapping and nullability.
How to use converter json to c#

Frequently Asked Questions

Trouvez des réponses rapides

What types are inferred from JSON values?
Strings map to string, numbers to int/long/decimal/double depending on value, booleans to bool, nulls to nullable types, objects to new classes, and arrays to List with a single inferred element type when possible.
Can arrays contain mixed types?
If arrays are heterogeneous, the tool defaults to List to preserve data without forcing an incorrect single type; consider normalizing input JSON for stronger type guarantees.
Does it support JsonPropertyName / JsonProperty attributes?
Yes. The generator can emit attributes to preserve original JSON property names when the target serializer requires exact mapping, aiding compatibility with existing APIs.

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