JSON to Python — Generate Python Dataclass from JSON
Paste any JSON and instantly generate a ready-to-use Python dataclass. Customize the class name, handle nested objects and arrays, and copy the output to your clipboard. 100% client-side — your data stays private.
How to Use the JSON to Python Converter
- Paste your JSON in the left panel.
- Enter a class name in the top bar (default: MyModel).
- The Python dataclass is generated automatically as you type.
- Copy the output and paste it into your Python project.
- Nested objects become inner dataclasses; arrays detect the element type.
Why Use This JSON to Python Converter
Manually writing dataclasses for JSON responses is tedious and error-prone. This tool parses your JSON structure and generates a complete Python dataclass with proper type hints — including nested objects, lists, and optional fields.
The generated code uses Python's built-in dataclasses module, so no third-party dependencies are required. You can paste it directly into any Python 3.7+ project.
Frequently Asked Questions
Yes. Nested objects are converted to inner dataclasses. For example, a "address" field with nested properties becomes an Address dataclass inside the main class.
The generated code uses dataclasses, which is available in Python 3.7+. It also uses type hints like Optional and List from the typing module.
JSON null values are mapped to Optional[<type>] = None in the generated Python code, ensuring proper handling of nullable fields.
Use Cases
API Response Models
Generate typed models from REST API responses for robust data handling in Python clients.
Config File Parsing
Convert JSON configuration files into strongly-typed Python classes for validated access.
Rapid Prototyping
Skip boilerplate — paste a sample JSON and get a working dataclass in seconds.
Documentation & Testing
Generate sample dataclasses to document expected JSON structures for your team.