TOML (Tom's Obvious Minimal Language) is an easy-to-read configuration file format designed by Tom Preston-Werner (co-founder of GitHub). It aims to be a semantically clear and easy-to-read configuration format, widely used in Rust (Cargo.toml), Python (pyproject.toml), Go, and many other language projects.

What's the difference between TOML and JSON?

Both are data serialization formats, but with different design goals. TOML is designed specifically for configuration files, supports comments, date types, and has more readable syntax. JSON is a general-purpose data exchange format that is more compact but does not support comments. TOML supports nested tables ([table]) and array tables ([[array]]), while JSON uses objects and arrays.

Which TOML data types are supported?

This tool supports the main data types in the TOML standard: strings (single-line/multi-line), integers, floats, booleans, datetime, arrays, and inline tables. It covers most common use cases in daily configuration files.

Will my data be uploaded to a server?

No. All conversion operations are completed locally in your browser. Your data never leaves your device. Please feel free to use it.

TOML/JSON Converter

Convert between TOML and JSON formats

Indent Spaces:

TOML Input

JSON Output

TOML/JSON Converter Usage Guide

Main Features

TOML → JSON - Convert TOML config files to JSON format
JSON → TOML - Convert JSON data to TOML config format
Indent Control - Supports 2, 4, and 8 space indentation
Nested Tables - Supports TOML tables and inline tables

Use Cases

Convert Cargo.toml, pyproject.toml and other configs to JSON
Migrate API configs from JSON to TOML format
Config file format unification and conversion
Quick validation and preview of TOML configs

TOML/JSON Converter

TOML/JSON Converter Usage Guide

Main Features

Use Cases

常见问题

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