Online JSON to TOML Converter
Convert common configuration data between JSON and TOML without uploading it or installing a local package. It is useful when a project moves configuration between JavaScript tooling that prefers JSON and applications that prefer readable TOML.
What is a JSON to TOML converter?
JSON and TOML are both used for structured configuration, but TOML emphasizes readable tables and simple values while JSON is common in APIs and JavaScript tooling.
How to convert JSON and TOML
Choose the direction, paste the source document, and select Convert. The generated output appears in a separate copyable panel.
Know the format differences
Because the formats have different structural models, complex JSON arrays of mixed objects may need review after conversion. Simple tables, arrays, strings, numbers, and booleans translate cleanly.
How to use JSON ↔ TOML Converter for related tasks
Choose a direction, convert the configuration, and review nested tables or arrays where JSON and TOML represent structure differently.
Related tools: JSON ↔ YAML Converter, JSON Parser.
Frequently asked questions
What TOML features are supported?
The converter supports common TOML tables, dotted keys, strings, booleans, numbers, arrays, and comments.
Does conversion upload my configuration?
No. Parsing and serialization run entirely in your browser.
Will every JSON structure map perfectly to TOML?
TOML is table-oriented, so deeply mixed JSON arrays and unusual key shapes may need manual adjustment after conversion.
Can I convert a TOML config file to JSON?
Yes. Select TOML to JSON and review the resulting object, especially when the source uses advanced TOML features or mixed arrays.