FreeToolbelt

TOML to JSON Converter

Paste TOML and get equivalent JSON back instantly — tables become nested objects, arrays and inline tables convert directly, and dates become ISO 8601 strings. Useful for inspecting Cargo.toml, pyproject.toml, and other TOML configuration as JSON. Syntax errors are reported with their position. Runs entirely in your browser; nothing is uploaded.

TOML input
JSON output

Frequently asked questions

No. The conversion runs entirely in your browser using JavaScript. Your config files never leave your device.

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