JSON to C# Class Generator

Generate C# classes from JSON with nested types and list detection.

How to Use JSON to C# Class Generator

Enter InputFill in the fields above

ProcessClick the button to run the tool

Get ResultCopy your output instantly, no signup needed

JSON to C# Class Generator — Free Developer Utility

JSON to C# Class Generator eliminates the tedious work of manually writing C# model classes to match an API response or JSON file — paste any JSON object or array and get back complete, properly-typed C# classes ready to paste into your project. The generator infers appropriate C# types for every field (int, double, bool, DateTime, string), automatically creates nested classes for embedded objects, and detects arrays of objects to generate List properties pointing at their own generated class. This saves significant time when consuming third-party APIs, deserializing configuration files, or working with JSON data exported from another system — instead of manually typing every property and guessing at types, you get a working starting model in seconds that you can immediately use with Newtonsoft.Json or System.Text.Json deserialization.

Keywords and Search Terms

Developers searching for this tool use terms like: json to c# class, json to csharp, generate c# model from json, json class generator, c# poco generator. Tooliby provides this utility free with no signup, no watermarks, and no data logging.

Privacy — Your Data is Never Stored

Every input you paste into Tooliby developer tools is processed in memory and immediately discarded. We do not log inputs, store results, or analyze your data.

Frequently Asked Questions

Yes — the generated properties match standard PascalCase C# conventions and work with both Newtonsoft.Json and System.Text.Json out of the box.

Arrays of primitives (not objects) generate a List of the appropriate primitive type rather than creating an unnecessary wrapper class.

Nested objects are named after their parent property in PascalCase. You can rename them afterward in your IDE if you prefer more specific names.

The generator doesn't currently mark properties as nullable — review the output and add '?' to value types (int?, bool?, etc.) for fields that may be absent or null.