Free online tool

TOML ↔ JSON Converter

Convert TOML configuration to JSON and convert JSON objects back to TOML.

Works on your deviceNo account neededTOML / JSONOpen workspace ↓

Can TOML be converted to JSON?

Yes. TOML tables become JSON objects and TOML arrays become JSON arrays. This tool also converts a JSON object into a downloadable TOML configuration.

Your input

0 characters

Your input stays in this browser.

Your result

A little clarity, right here.

Start with your own content or load the example. Your result will appear here.

Three simple steps

How to use TOML ↔ JSON Converter

  1. Paste your content or choose a supported file.

  2. Adjust the options, then run the tool.

  3. Review the result and copy or download it.

Common questions

Good to know

Understand the result.
Keep the original.

Is this tool free, and are my files uploaded?

This tool is free with no account required. The work happens in your browser. Your input and files are not sent to a processing server.

What are the limits and details?

TOML dates are represented as strings in JSON. Comments are not preserved, and null has no equivalent in TOML.

Limits: 500,000 characters per text field; files up to 20 MB each, 10 files and 50 MB total. Processing stops after 30 seconds.