What does this tool do?
This TOML to JSON tool instantly converts the TOML configuration you paste into valid, indented JSON. It is ideal for developers working with TOML files such as Cargo.toml, Hugo config or pyproject.toml, with support for tables, nested tables, arrays, numbers, booleans and string values.
How to use it
- Paste or type your data into the left field.
- The result is generated instantly on the right.
- Use the Copy button to grab the output.
Why convert TOML to JSON?
Many tools and APIs expect configuration as JSON, while TOML is friendlier to write by hand. Converting a TOML file to JSON lets you feed the values into a JavaScript app, drop them into an API request body, or pass them to another converter. The tool turns [table] headers into nested objects and dotted sections such as [database.credentials] into multi-level structures, then outputs the result as indented, readable JSON you can copy with one click.
Supported TOML syntax
This converter covers core TOML: double or single quoted strings, integers and decimals, true/false booleans, bracketed arrays ([8001, 8002]) and [section] plus [a.b] table headers. Trailing line comments starting with # are ignored automatically. For advanced features such as multi-line strings, date-time values and inline tables, we recommend reviewing the generated JSON manually, as this parser focuses on the most common TOML constructs.
Frequently asked questions
Are nested tables like [database.credentials] supported?
Yes. Dotted section headers are expanded into multi-level nested JSON objects, preserving the original hierarchy from your TOML.
What happens to TOML arrays?
Bracketed arrays such as [8001, 8002] become JSON arrays, with each element parsed to its proper type (number, string or boolean).
Are comments kept in the output?
No. Lines starting with # and inline comments after a value are stripped automatically during parsing, so they never appear in the JSON.
Is TOML to JSON free?
Yes. TOML to JSON and all 300+ tools on MagmaNex are completely free with no signup or account required.
Is my data safe?
Yes. Everything runs locally in your browser. The data you enter is never sent to a server, stored, or shared.
Does it work on mobile?
Yes. TOML to JSON works on phones, tablets and desktops — no app download needed.
🔒 Privacy: everything runs in your browser, your data is never sent to a server.