Why convert JSON to TOML?

TOML is a format specifically designed for configuration files, more readable than JSON and simpler than YAML. Ecosystems like Rust and Python (pyproject.toml) widely use TOML. After conversion, you can use the configuration files directly in these projects.

What are the main features of TOML?

TOML's design goals are 'obvious, minimal, and unambiguous'. It uses key-value pairs to represent data, supports nested tables and arrays of tables, has intuitive syntax, and doesn't have YAML's indentation error problems.

How are nested objects converted?

Nested objects in JSON are converted to TOML tables ([section] or [section.subsection]). This clearly represents hierarchical relationships while maintaining configuration file readability.

How are arrays handled?

JSON arrays are converted to TOML's standard array format (wrapped in square brackets). For arrays of objects, the array of tables syntax ([[table]]) is used, which is the standard way TOML represents object arrays.

Can the converted TOML be used directly?

Yes. The converted TOML conforms to TOML v1.0.0 specification and can be parsed correctly by standard TOML parsers. You can save it directly as a .toml file and use it in your projects.

JSON to TOML Converter Online - EXUtil Extended Utilities

Free online JSON to TOML converter. Quickly convert JSON data format to TOML format, generating concise configuration files for Rust, Python, and other projects.

How to use

Paste or import the content you want to process.
Choose an available action and run the tool.
Review the result, then copy or download the output.

Frequently asked questions

Why convert JSON to TOML?: TOML is a format specifically designed for configuration files, more readable than JSON and simpler than YAML. Ecosystems like Rust and Python (pyproject.toml) widely use TOML. After conversion, you can use the configuration files directly in these projects.
What are the main features of TOML?: TOML's design goals are 'obvious, minimal, and unambiguous'. It uses key-value pairs to represent data, supports nested tables and arrays of tables, has intuitive syntax, and doesn't have YAML's indentation error problems.
How are nested objects converted?: Nested objects in JSON are converted to TOML tables ([section] or [section.subsection]). This clearly represents hierarchical relationships while maintaining configuration file readability.
How are arrays handled?: JSON arrays are converted to TOML's standard array format (wrapped in square brackets). For arrays of objects, the array of tables syntax ([[table]]) is used, which is the standard way TOML represents object arrays.
Can the converted TOML be used directly?: Yes. The converted TOML conforms to TOML v1.0.0 specification and can be parsed correctly by standard TOML parsers. You can save it directly as a .toml file and use it in your projects.