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TOML to JSON Converter

Convert TOML to JSON online for configs, Cargo/pyproject-style files, and tooling that expects JSON. Paste TOML and get formatted JSON instantly in your browser.

TOML Input

JSON Output

When to use this tool

You need TOML config as JSON for an API or script.

You want to inspect a TOML file in a JSON editor.

Examples

Simple TOML table

Input

name = "Ada"

[server]
port = 8080

Output

{
  "name": "Ada",
  "server": {
    "port": 8080
  }
}

Developer use cases

Convert Cargo.toml-style snippets to JSON fixtures.

Debug TOML config values as JSON objects.

Common mistakes to avoid

Mixing invalid TOML table headers.

Expecting comments to appear in JSON output.

Format and behavior notes

TOML tables become nested JSON objects.

Comments are not preserved in JSON.

Conversion runs locally in your browser.

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JSON Validator

Validate JSON syntax and structure

Frequently Asked Questions

How do I convert TOML to JSON?

Paste TOML into the input editor. The tool parses it and writes formatted JSON.

Are TOML comments preserved?

No. JSON has no standard comment syntax, so comments are dropped.

Is conversion local?

Yes. TOML to JSON conversion runs in your browser.