JSON to Pydantic Model Generator — Free Online Tool
Generate Python Pydantic BaseModel classes from a JSON sample — nested objects, arrays, and aliases.
🔒 All processing happens in your browser. Your JSON is never uploaded or sent to any server.
How to Use
- Paste a JSON object (typically an API response) into the left pane.
- Optionally set the Root Model Name — this becomes the name of the outermost Pydantic class.
- Click Convert to generate Pydantic
BaseModelclasses, with aliases added automatically for non-Python-style keys. - Click Copy Result and paste into your Python project.
Frequently Asked Questions
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