JSON to C# Converter
ConvertersGenerate C# classes from a JSON object instantly in your browser. Powered by quicktype-core. clang-format output. UML class diagram view. 100% client-side.
JSON →
C#
JSONjson
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C#csharp
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Input: 315 chars
About JSON to C# Converter
The JSON to C# converter uses `quicktype-core` with `features: just-types` to generate C# class definitions. A post-processing step strips the Serialize/Converter boilerplate, leaving clean `public` C# classes with typed properties. Output is formatted with clang-format via WASM. The UML class diagram panel shows the inferred class hierarchy.
Features
- ✓Powered by quicktype-core with just-types mode
- ✓Generates public C# classes with typed properties
- ✓Post-processed to remove Converter and Serialize boilerplate
- ✓Formatted with clang-format via WASM for idiomatic C# style
- ✓UML class diagram view shows the inferred class hierarchy
- ✓Handles nested JSON objects → nested C# classes
- ✓Handles arrays → List<T> properties
- ✓Nullable properties use ? annotations
- ✓Download generated C# as a .cs file
- ✓Copy output to clipboard in one click
- ✓Web Worker processing — never blocks the UI
- ✓100% client-side — data never leaves your browser
Common Use Cases
- Generating C# model classes from JSON API responses for .NET apps
- Creating C# DTOs from JSON payloads for ASP.NET Web API
- Scaffolding C# data classes from JSON configuration files
- Reverse-engineering JSON to C# types for Unity or Blazor projects
Frequently Asked Questions
QIs the output compatible with System.Text.Json and Newtonsoft.Json?
The generated classes are plain C# and work with both System.Text.Json and Newtonsoft.Json serialisers.
QIs my data sent to a server?
No. quicktype-core and clang-format WASM run in a Web Worker inside your browser.