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Generators & Utilities

TOML to JSON Converter

Convert TOML configuration (Cargo.toml, pyproject.toml) into JSON and back.

Runs entirely in your browser — your data never leaves your device.

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How to use this tool

  1. 1Paste your TOML or JSON into the editor.
  2. 2Choose the conversion direction.
  3. 3Copy the result.

Frequently asked questions

Does it handle tables and arrays of tables?
Yes. TOML tables, nested tables, and arrays of tables map onto nested JSON objects and arrays.
Can it convert pyproject.toml?
Yes. Standard TOML files including Cargo.toml and pyproject.toml are supported.
Is my data uploaded to a server?
No. Every tool on JSONPost runs entirely in your browser using JavaScript. Your JSON never leaves your device, so it is safe to use with private or sensitive data.

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