JSON to Python Dataclass

Free online JSON to Python dataclass converter for fast model generation from JSON.

  • Runs locally in your browser
  • No data uploaded
  • Instant processing
Waiting for input

How to Use JSON to Python Dataclass

  1. Paste a valid JSON object in the input area.
  2. The converter creates Python dataclass code in real time.
  3. Copy the generated classes into your Python codebase.

Example Usage

Input

{"id":1,"title":"Task"}

Output

from dataclasses import dataclass

@dataclass
class Root:
    id: int
    title: str

Frequently Asked Questions

Does it generate nested dataclasses?
Yes. Nested JSON objects are emitted as nested class definitions.
What if JSON is invalid?
The tool returns a readable error message instead of broken code.
Is this JSON to dataclass tool free?
Yes. It is free and runs client-side without signup.