Data & JSON tools

JSON to C# class converter

Infer C# property types from sample JSON and generate class definitions. Supports List<T> / arrays, JsonPropertyName attributes and nullable reference types to speed up backend model creation.

Root type name Array type JsonPropertyName Nullable reference types

JSON input

Notes: mixed types or arrays degrade to object; missing or null fields become nullable types; in List<T> mode list properties are initialized with new().

C# output

Usage & Instructions

Paste your JSON data into the "JSON Input" box.
Set the "Root Class Name" and list handling (List/Array).
Optionally enable `JsonPropertyName` or Nullable types.
Copy the generated C# class definitions from the right panel.

Tips & Tricks

Local Processing: All conversion logic runs in your browser; no data is uploaded.
Smart Inference: Automatically detects types (string, int, bool, arrays) and generates corresponding C# properties.
Naming Conventions: Properties are automatically converted to PascalCase to follow C# standards.

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