Is my data safe to convert here?

Yes. All conversion happens in your browser. No data is transmitted to any server.

How are TOML dates handled?

TOML datetime values are converted to ISO 8601 strings in the JSON output.

TOML → JSON Converter

TOML Input

JSON Output

Why use a private TOML to JSON converter?

TOML config files like Cargo.toml or pyproject.toml sometimes need to be converted to JSON for tooling that only accepts JSON. This converter runs entirely in your browser — no data is uploaded or transmitted.

How it works

The converter parses the TOML input using a TOML parser library, maps all types to their JSON equivalents, and outputs formatted JSON. TOML tables become JSON objects, TOML arrays of tables become JSON arrays, and TOML date-times are represented as ISO 8601 strings.

Common use cases

Converting Cargo.toml dependency sections to JSON for tooling
Translating pyproject.toml config to JSON for CI/CD scripts
Converting TOML-based config files to JSON for APIs

Frequently asked questions

Is my data safe to convert here?: Yes. All conversion happens in your browser. No data is transmitted to any server.
How are TOML dates handled?: TOML datetime values are converted to ISO 8601 strings in the JSON output.