JSON to C# Class Generator
Turn any JSON payload into strongly-typed C# classes with System.Text.Json attributes — perfect for .NET APIs.
What is the JSON to C# Class Generator?
The JSON to C# Class Generator converts a JSON document into strongly-typed C# model classes. It walks the JSON tree, detects nested objects and arrays, and emits one class per type with properties matching the JSON keys — ready to paste into your .NET solution.
Generation happens in the browser, which matters when the sample payload comes from a private endpoint.
How to use the JSON to C# Class Generator
- 1Paste a representative JSON sample into the input area.
- 2Set the root class name (for example, "OrderResponse").
- 3Pick options: PascalCase properties, System.Text.Json or Newtonsoft.Json attributes.
- 4Click "Generate" and copy the produced classes into your solution.
Key features
- Detects nested objects, arrays, dates and primitives
- Optional serializer attributes for System.Text.Json or Newtonsoft.Json
- Configurable naming conventions
- Output compatible with .NET 6 and newer
Frequently asked questions
Can I generate records instead of classes?
Currently only classes are generated.
Does it handle polymorphic JSON?
Not automatically — polymorphic types usually need a hand-written converter.
All Developer Tools
Tap any tool to jump straight in — no signup, works on mobile.
JSON FormatterBase64 Encode/DecodeUUID GeneratorRegex TesterSQL FormatterSQL Query BeautifierSQL Query GeneratorHTML FormatterAPI Response FormatterJSON to C# Class GeneratorJWT DecoderTimestamp ConverterData Format ConverterOnline Code Playground (HTML, CSS, JS Editor)Free API Tester Online (Postman Alternative)XML FormatterURL Encoder / DecoderSVG Viewer & Converter