TOML to JSON

Convert simple TOML configuration entries to JSON with a limited parser

Last updated: October 14, 2026

How to use

  • Paste your TOML configuration in the input area
  • Click "Load Example" to see a sample TOML file
  • Click "Convert to JSON" to transform the TOML to JSON
  • The tool will validate the TOML syntax and show errors if any
  • Copy the JSON output or download as a file

About TOML

TOML (Tom's Obvious, Minimal Language) is a configuration file format that aims to be easy to read and write. This tool converts TOML to JSON, making it easy to work with TOML data in environments that expect JSON format.

Supported Features

  • • Sections and nested sections
  • • Key-value pairs
  • • Strings, numbers, and booleans
  • • Arrays
  • • Comments (ignored in output)

Result actions

Copy or download the tool output, or share a link to TOML to JSON.

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What this TOML to JSON tool does

Paste a basic TOML configuration and convert supported key-value pairs and table sections into formatted JSON. TOML comments are skipped, and simple strings, booleans, numbers, and flat arrays are mapped to JSON values.

How to use it

  1. Paste a TOML document containing simple assignments and table headers.
  2. Select Convert to JSON.
  3. Review the result and validate it with a TOML parser before relying on it.

Supported subset and limits

This is a small hand-written parser, not a full TOML implementation or syntax validator. It handles basic table headers, simple assignments, and flat arrays, but does not reliably support the full TOML specification. Escaped strings, multiline strings, dates and times, inline tables, arrays of tables, complex keys, and nested array syntax may be misread or lose information. The parser may produce output for invalid or unsupported input without reporting every problem. Do not use the result as a validated configuration until you compare it with a standards-compliant TOML parser.

Privacy

Conversion runs in your browser; pasted configuration is not sent to our servers.