Convert XML to Pydantic online, free. XML is a verbose, self-describing markup format used in SOAP, RSS and enterprise systems. Pydantic BaseModels validate and parse data into typed Python objects. XML to Pydantic conversion parses your XML against the W3C XML 1.0 grammar (https://www.w3.org/TR/xml/), builds an in-memory model of its keys, nested objects and arrays, then emits ready-to-use Pydantic types as Pydantic BaseModel classes with typed fields following the Pydantic docs conventions. Processing runs in your browser in JavaScript with no upload or server round-trip — no size limit beyond your device's memory, so multi-megabyte documents convert in milliseconds and sensitive payloads never leave your machine. Typical uses include FastAPI request/response models, settings validation and ETL parsing.
It maps the full structure of your XML onto idiomatic Pydantic types, following the Pydantic docs conventions. 100% free, no registration, and complete privacy — everything runs locally in your browser, so your data never touches a server.
Paste XML and generate Pydantic types from Pydantic immediately. Conversion runs client-side, so there is no upload wait and large documents stay fast.
Nested XML objects, tables and arrays are mapped faithfully onto Pydantic, including nested types and optional fields.
Your XML never leaves your device — everything is processed locally in JavaScript, with nothing logged or stored.
Unlimited conversions with no account, no quotas, and no watermark. Works on desktop and mobile.
A XML document and its Pydantic equivalent:
XML input:
<product>
<sku>A-100</sku>
<price>19.99</price>
<active>true</active>
</product>Output:
from pydantic import BaseModel
class Product(BaseModel):
sku: str
price: float
active: boolPaste your XML into the editor and press "Convert to Pydantic". The tool parses it against the W3C XML 1.0 grammar, then generates Pydantic types following Pydantic docs conventions — instantly and entirely in your browser. You can validate or format the XML first to be sure it is clean.
XML has no native numbers, booleans or arrays. Repeated child elements become lists in Pydantic, attributes and element text become fields, and values stay strings unless Pydantic coerces them — so review numeric or boolean fields after converting.
Optional or nullable members in the generated Pydantic are inferred from keys missing in some records of your XML, following Pydantic docs. Include the optional fields in your sample so they are typed correctly.
XML (eXtensible Markup Language) (XML) — XML is a verbose, self-describing markup format used in SOAP, RSS and enterprise systems. Pydantic models (Pydantic) — Pydantic BaseModels validate and parse data into typed Python objects. This converter maps the structure of your XML onto Pydantic so you can use it for FastAPI request/response models.
Yes. Invalid XML is flagged with a clear error before anything is converted. Common XML problems to check are matched start and end tags, a single root element, and quoted attribute values. Starting from clean input keeps the generated Pydantic accurate.
Yes. The entire XML-to-Pydantic conversion runs locally in your browser in JavaScript — your XML is never uploaded, logged or stored. That matters when the data is something like SOAP web services, which should not leave your machine.
The generated Pydantic is ready for FastAPI request/response models, settings validation and ETL parsing. Copy or download it and drop it straight into your codebase.
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