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JSON to Python

Turn a JSON sample into typed Python dataclasses or TypedDicts with nested classes named from the key path.

Generate Python classes

Generated: —
Nested classes are named from the key path, lists use typing.List and null values become Optional fields.

How to use the JSON to Python

  1. Paste a JSON sample and pick dataclasses or TypedDicts.
  2. Name the root class and press Generate classes.
  3. Copy the Python code, then import it into your project.

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Frequently Asked Questions

Common questions about the free online json to python.

Paste a JSON sample, choose dataclasses or TypedDicts, then press Generate classes to get typed Python code.
Dataclasses build real objects with attribute access, while TypedDicts describe plain dictionaries for type checkers only.
Every nested object becomes its own class named from the key path, and the parent field is annotated with that class.
Keys that are missing from some array items or hold null become Optional fields defaulting to None in dataclass mode.
Arrays are annotated with typing.List of the merged element type, and mixed values fall back to typing.Any.
Yes. The output imports only dataclasses and typing, so it runs on any supported Python 3 version without extra packages.
No. Everything is parsed and generated locally in your browser, so nothing you paste is uploaded.
No. The generator is free, unlimited and works without any sign-up, login or payment.
Yes. The generated classes are yours to use in any project, including commercial and closed source work.

Last updated: October 10, 2026