JSON to Python Class

What is JSON to Python Class Converter?

The JSON to Python Class Converter is an essential tool for developers working with APIs, configuration files, or data processing tasks. It automatically transforms JSON objects into well-structured Python class definitions, supporting multiple popular Python patterns including standard dataclasses, Pydantic BaseModel classes, and plain object-oriented classes.

This converter analyzes JSON structure and intelligently maps data types to appropriate Python type annotations. It handles nested objects, arrays, primitive types, and complex data structures, making it easy to create type-safe Python code from JSON schemas or API responses. All processing happens client-side for complete data privacy and security.

How to use JSON to Python Class Converter

1. Paste JSON object - Enter valid JSON in the left panel (the tool validates JSON syntax)
2. Select output format - Choose between Standard Dataclass, Pydantic BaseModel, or Plain Class
3. Generate Python class - The converter instantly creates type-annotated Python code
4. Copy generated code - Use the generated classes directly in your Python projects

Key Features

• Multiple output formats - Generate dataclasses, Pydantic models, or traditional classes
• Type inference - Automatically detects and annotates property types from JSON data
• Nested structure support - Handles complex JSON with nested objects and arrays
• Standards compliant - Creates valid Python code that can be immediately imported and used
• Validation included - JSON parsing validates input before conversion
• Framework agnostic - Compatible with Django, FastAPI, Flask, and other Python frameworks

Frequently Asked Questions

What types of JSON structures does it support?
The converter handles all valid JSON including nested objects, arrays of varying types, primitive values (strings, numbers, booleans), and null values. It intelligently maps JSON arrays to Python List types and creates appropriate type hints for complex structures.