Converter
How it works
This in-browser tool parses TypeScript interface
and simple type
aliases and generates equivalent Pydantic
models (Python BaseModel
). It maps basic types as follows:
string
→str
number
→float
(orint
with strict mode)boolean
→bool
Type[]
/Array<Type>
→List[Type]
- union with
null
orundefined
→Optional[... ]
- nested interfaces → nested Pydantic models
Because TypeScript allows more flexible typing (union types, mapped types, generics), this tool handles the most common patterns and provides an editable result you can tweak for edge cases.
Examples
Input
interface Product { sku: string; price: number; tags?: string[]; metadata: Record; }
Output
from typing import Optional, List, Dict, Any from pydantic import BaseModel class Product(BaseModel): sku: str price: float tags: Optional[List[str]] = None metadata: Dict[str, Any]
FAQ & SEO Content
Why use an in-browser converter?
An in-browser converter keeps your types private (no server upload), works offline, and gives instant feedback. It's perfect for prototypes, documentation generation, or learning how TypeScript maps to Pydantic.
SEO-friendly longform: How to migrate TypeScript interfaces to Pydantic models
Introduction. Many modern backends use Python (FastAPI, Flask) with Pydantic models for request/response validation, while frontend codebases use TypeScript interfaces. Keeping both in sync manually is error-prone. This converter reduces friction by creating an initial Pydantic model from a TypeScript interface.
Step-by-step migration strategy
- Gather canonical TypeScript interfaces from your frontend repository.
- Paste them into the converter to generate initial Pydantic models.
- Review and adjust field types and validation constraints (e.g. use
constr
,Field(..., gt=0)
). - Integrate generated models into your backend and write tests that assert JSON compatibility.
SEO keywords & intent
This page targets keywords such as TypeScript to Pydantic, interface to pydantic, ts to pydantic converter. Content focuses on developer intent: migration, validation, synchronization, and automation.
Content length & authority
To rank well, expand this page with real-world examples, GitHub repo links (tutorials), a downloadable CLI version, and a changelog. Add structured data (JSON-LD) and an FAQ section to appear in search rich results.