JSON to Python Dataclass
Generate Python dataclasses, Pydantic models or TypedDicts with type hints from JSON. Free and private: runs in your browser.
Paste sample JSON to get typed Python models for every nested object.
Runs entirely in your browser. Nothing you paste is uploaded or stored.
Use cases
- Move data between APIs, config files and databases.
- Bootstrap models from a sample API response.
- Save time on repetitive hand-written boilerplate.
Frequently asked questions
Dataclass or Pydantic?
Dataclasses are built in and lightweight. Pydantic adds validation and JSON parsing, which is ideal for API input.
Is the JSON to Python Dataclass free?
Yes. It is free with no sign-up, and it runs entirely in your browser, so your input is never uploaded or stored.
Should I use the generated output as-is?
Treat it as a strong starting point. Types are inferred from your sample, so review nullability, naming and edge cases before committing it.
Related tools
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