Convert TOML to Python online, free. TOML is a readable configuration format built around key/value pairs and tables. Python dataclasses model structured data with type hints and no third-party deps. TOML to Python conversion parses your TOML against the TOML v1.0.0 grammar (https://toml.io/en/v1.0.0), builds an in-memory model of its keys, nested objects and arrays, then emits ready-to-use Python types following the Python dataclasses 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 scripts & data pipelines, FastAPI/Flask models and type-hinted application code.
It maps the full structure of your TOML onto idiomatic Python types, following the Python dataclasses conventions. 100% free, no registration, and complete privacy — everything runs locally in your browser, so your data never touches a server.
Paste TOML and generate Python types from Python immediately. Conversion runs client-side, so there is no upload wait and large documents stay fast.
Nested TOML objects, tables and arrays are mapped faithfully onto Python, including nested types and optional fields.
Your TOML 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 TOML document and its Python equivalent:
TOML input:
host = "db.internal"
port = 5432
secure = trueOutput:
from dataclasses import dataclass
@dataclass
class Server:
host: str
port: int
secure: boolPaste your TOML into the editor and press "Convert to Python". The tool parses it against the TOML v1.0.0 grammar, then generates Python types following Python dataclasses conventions — instantly and entirely in your browser. You can validate or format the TOML first to be sure it is clean.
TOML values are typed and it has first-class dates and times, so they carry into Python cleanly. TOML tables become nested Python types, and arrays-of-tables become lists.
Optional or nullable members in the generated Python are inferred from keys missing in some records of your TOML, following Python dataclasses. Include the optional fields in your sample so they are typed correctly.
TOML (Tom's Obvious Minimal Language) (TOML) — TOML is a readable configuration format built around key/value pairs and tables. Python dataclasses (Python) — Python dataclasses model structured data with type hints and no third-party deps. This converter maps the structure of your TOML onto Python so you can use it for scripts & data pipelines.
Yes. Invalid TOML is flagged with a clear error before anything is converted. Common TOML problems to check are correct key/value pairs, quoted strings, and valid [table] headers. Starting from clean input keeps the generated Python accurate.
Yes. The entire TOML-to-Python conversion runs locally in your browser in JavaScript — your TOML is never uploaded, logged or stored. That matters when the data is something like Rust Cargo & Python pyproject config, which should not leave your machine.
The generated Python is ready for scripts & data pipelines, FastAPI/Flask models and type-hinted application code. Copy or download it and drop it straight into your codebase.
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