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TOML ↔ JSON Converter

Convert TOML config files to JSON and JSON back to TOML for Cargo, pyproject, and DevOps tooling.

About this tool

Work with Cargo.toml, pyproject.toml, and other TOML-first configs alongside JSON-based scripts and validators. Supports tables, dotted keys, strings, numbers, booleans, and inline arrays.

What you get

  • JSON object from TOML tables and key/value pairs
  • TOML text regenerated from a flat or nested JSON object
  • Clear parse errors on invalid or unsupported syntax
  • Bidirectional mode with live conversion
  • Pretty-printed JSON output with indentation
  • One-click copy of TOML or JSON result

How to use

Choose direction, paste TOML or JSON, and copy the output. Stick to common TOML features for best round-trip results.

Related searches

  • toml to json
  • json to toml
  • toml converter

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FAQ

How to convert TOML to JSON online?

Paste your TOML file, choose TOML→JSON, and copy the resulting JSON object. Tables and dotted keys are flattened into nested properties.

Can pyproject.toml be converted to JSON?

Yes—common Cargo, Python, and tool configs using standard TOML tables and scalars convert cleanly for scripting or validation.

How to convert JSON back to TOML?

Switch to JSON→TOML and paste a JSON object. Output uses TOML tables and key/value syntax suitable for config files.

What TOML features are supported?

Tables, dotted keys, strings, numbers, booleans, and inline arrays are supported. Unusual or invalid syntax shows a clear parse error.

How to convert Cargo.toml dependencies to JSON?

Paste the Cargo.toml file in TOML→JSON mode and copy the JSON object to feed build scripts, dependency dashboards, or CI validators.

By using this tool you agree to our Terms of Use and Privacy Policy. Results are provided as-is without warranty.