What happens to a TOML date?

It stays a string. TOML has first-class datetime types and JSON has none, so 1979-05-27T07:32:00Z is preserved verbatim rather than converted into something lossy.

How does a dotted key convert?

It becomes nesting: owner.name = "Ada" produces an owner object with a name inside, which is the same result as writing an [owner] section.

JSON1 / TOML to JSON

TOML to JSON

Convert TOML to formatted JSON. Tables, table arrays, dotted keys, inline tables, and multi-line arrays are all supported.

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Processed locally·Your data never leaves your device

InputTOML

Ready

OutputJSON

Converted output appears here as you type.

Good to know

JSON has no date type, so TOML datetimes are kept as strings.

About this tool

Reading a TOML config as JSON is useful for inspecting what a tool will actually see, or for pulling values out of a Cargo.toml or pyproject.toml in a script that only handles JSON.

Tables, array-of-tables, dotted keys, inline tables, and arrays spread over several lines are all supported, including the nesting that TOML section headers imply.

What happens to a TOML date?: It stays a string. TOML has first-class datetime types and JSON has none, so 1979-05-27T07:32:00Z is preserved verbatim rather than converted into something lossy.
How does a dotted key convert?: It becomes nesting: owner.name = "Ada" produces an owner object with a name inside, which is the same result as writing an [owner] section.