JSON to C# Class
Generate a simple C# class skeleton from example JSON.
Last reviewed by the Radiatus Cloud team
Output
Need this built for your product?
We design, build & host secure software & APIs.
Turn example JSON into a C# class
Writing a a C# class type by hand to match a JSON structure is tedious and error-prone, especially for nested data. This tool generates a C# class skeleton from example JSON, so you paste a representative sample and get a matching type skeleton to drop into your code. It reads the shape of the data and produces the corresponding definition, saving the manual transcription that is easy to get subtly wrong.
Why generating beats hand-writing
C# classes with properties bind JSON through serializers like System.Text.Json. Generating the type from real example data means the field names and structure match exactly what your code will receive, which is where hand-written types drift and cause bugs. It handles nested objects and arrays by producing the corresponding nested definitions, so even a deep structure converts in one step rather than being built up laboriously by hand.
A skeleton to refine
It produces C# properties typed from the JSON. Treat the output as a strong starting point: types generated from a single example cannot know which fields are optional or what the full range of a value is, so review and adjust it against your real data. It runs entirely in your browser, so nothing you paste is uploaded and the result is yours to copy straight into a project. Because it works client-side, you can use it on private code and data without anything leaving your machine.
Related tools
- JSON Formatter — Format and beautify JSON in your browser. Pinpoints syntax errors by line and column, flags unsafe integers, and never uploads your data to a server.
- JSON Validator — Validate JSON syntax with precise line and column errors, and check documents against a JSON Schema. Runs locally in your browser, nothing uploaded.
- Regex Tester — Test regular expressions against sample text with live match highlighting, capture groups and flag control. Runs entirely in your browser.
- HTML Minifier — Minify HTML by removing comments and redundant whitespace, without breaking inline elements or pre blocks. Runs entirely in your browser.
Frequently Asked Questions
What does it generate?
A a C# class definition (a C# class skeleton) that matches the structure of the example JSON you paste, ready to use in your code.
Does it handle nested data?
Yes. Nested objects and arrays produce corresponding nested definitions, so a deep structure converts in one step.
Are the types exactly right?
They match the example, but a single example cannot reveal optional fields or the full range of a value, so review and adjust against your real data.
Why generate rather than hand-write?
Because generating from real data makes the names and structure match exactly what your code receives, avoiding the drift that hand-written types suffer.
Is my JSON uploaded?
No. The conversion runs entirely in your browser.
Privacy & Security
Generated locally in your browser. No data is sent to any server.
How to Use
Paste JSON and generate a C# class skeleton.
Disclaimer: This tool is provided "as is" without warranty of any kind. Results are for educational and utility purposes.
Related Tools
JSON Formatter
DeveloperFormat and beautify JSON in your browser. Pinpoints syntax errors by line and column, flags unsafe integers, and never uploads your data to a server.
JSON Validator
DeveloperValidate JSON syntax with precise line and column errors, and check documents against a JSON Schema. Runs locally in your browser, nothing uploaded.
Regex Tester
DeveloperTest regular expressions against sample text with live match highlighting, capture groups and flag control. Runs entirely in your browser.