Free browser-based converter

JSON to Python Dataclass Generator

Convert JSON into Python dataclasses when you want readable, typed models for API responses, fixtures, or ETL jobs. Typify infers nested classes, list annotations, and optional fields from a sample payload automatically.

That makes it practical for backend prototyping, notebook work, and data pipelines where hand-authoring model classes would be repetitive and error-prone.

Output mode

JSON input

137 / 50 KB

→

Python dataclasses

from dataclasses import dataclass
from typing import List, Optional

@dataclass
class Owner:
    name: str
    email: Optional[object] = None

@dataclass
class Job:
    id: int
    status: str
    priority: int
    owner: Owner

@dataclass
class Root:
    job: Job

Example

Start with the sample below, then replace it with your own data to generate output instantly.

Input JSON

{
  "job": {
    "id": 88,
    "status": "queued",
    "priority": 2,
    "owner": {
      "name": "Lin",
      "email": null
    }
  }
}

Python output

from dataclasses import dataclass
from typing import Optional

@dataclass
class Owner:
    name: str
    email: Optional[str] = None

@dataclass
class Job:
    id: int
    status: str
    priority: int
    owner: Owner

@dataclass
class Root:
    job: Job