JSON to Python Converter

Convert JSON data to Python dataclasses, Pydantic models, or TypedDicts. Generate clean Python types with proper annotations.

JSON Input

Options

Root Class Name

Output Mode

Use Optional for nullable fieldsAdd default values

Python Output (Pydantic)

# Paste JSON in the input to generate Python models

Type Mapping Reference

JSON string → str

JSON integer → int

JSON float → float

JSON boolean → bool

JSON null → Optional[Any] / None

JSON array → List[Type]

JSON object → nested model class

snake_case → snake_case preserved