JSON to Class Generator

Generate C#, Java, Python, JavaScript, or TypeScript models from a JSON sample.

Objects become nested models; arrays use their first item as the sample shape.

About this Tool

This tool infers a model structure from a JSON sample and generates starter code. Review optional fields, nested objects, names, and data types before using the result.

Why people use this tool

  • Turn a JSON API response into starter model code quickly.
  • Generate code for C#, Java, Python, JavaScript, or TypeScript.
  • Inspect nested objects and arrays before integrating the generated model.

How to use it

  1. Paste a representative JSON object or array.
  2. Choose a target language and enter the root class name.
  3. Click Generate, review inferred types, then copy and adapt the code.

Frequently Asked Questions

It is a starting point. Validate optional fields, dates, nullability, and nested data against your API contract.