TOML to JSON

What this tool does

smol-toml parses the document. Offset date-times become ISO strings. This is aimed at Cargo.toml-style config, not at TOML's rarer datetime variants as live Date objects.

How to use it

1. Paste TOML.
2. Copy JSON.
3. Keep secrets in the browser; reset when finished.

Privacy

This tool processes files and text locally in your browser. Your content is not uploaded or stored by this site.

ConvertPass does not include your input in analytics, URLs, or error reports. Encoding: UTF-8. Limit: 2 MB (2.00 MB).

Limitations

• TOML inline tables and dotted keys are expanded into nested JSON objects.
• Datetime values are serialised as strings.

Example

title = "ConvertPass"
local = true

[limits]
bytes = 2097152

{
  "title": "ConvertPass",
  "local": true,
  "limits": {
    "bytes": 2097152
  }
}

Troubleshooting

Invalid TOML near a table header

Table headers cannot appear twice with conflicting types. Check that [limits] is not also assigned as a key.

FAQ

Can I convert Cargo.toml?

Yes, as data. The tool does not understand Cargo semantics such as workspace inheritance.

Are comments preserved?

No. JSON has no comment syntax.

Does this execute TOML?

No. TOML is data. Still, treat config files as sensitive and reset the tool afterwards.

What TOML version is this?

The parser targets TOML 1.0. Features from earlier drafts that never landed are not supported.