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XML to TOML Converter

Converts XML to JSON, then renders that as a simplified TOML document: scalar keys, inline arrays of scalars, [section] tables for nested objects, and [[section]] array-of-tables for repeated elements. A free online tool from Staaarter, right in your browser.

Runs locallyUpdated 2026-07-23
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Overview

Introduction

TOML has become a popular config format for tools that want more structure than INI without YAML's full complexity.

This tool converts XML config into it directly.

What Is XML to TOML Converter?

A converter that turns XML into JSON.

It then renders that value as simplified TOML covering scalars, inline scalar arrays, section tables, and array-of-tables.

How XML to TOML Converter Works

XML is converted to JSON.

Each key is then classified: scalars and scalar arrays render inline, nested objects become [section] tables, and arrays of objects become repeated [[section]] array-of-tables blocks.

When To Use XML to TOML Converter

Use it when migrating an XML config into a TOML-based tool or system.

Many modern CLI tools and package managers use TOML for config, so this is a common conversion target.

Often used alongside TOML to XML Converter, XML to INI Converter and XML to YAML Converter.

Features

Advantages

  • Handles both nested objects and repeated-element lists, the two shapes TOML's tables and array-of-tables are built for.
  • Runs entirely client-side.
  • Preserves your XML's full nesting depth as nested TOML tables, unlike the flatter INI format.

Limitations

  • Doesn't produce TOML datetimes, inline tables, or dotted keys, just the common subset described above.
  • Every text value becomes a TOML string; there's no type inference beyond numbers and booleans that already look numeric/boolean in the source JSON.

Examples

Converting repeated elements to array-of-tables

Input

<items><item><name>Widget</name></item><item><name>Gadget</name></item></items>

Output

[items]
[[items.item]]
name = "Widget"

[[items.item]]
name = "Gadget"

The <items> wrapper becomes a [items] table, and each repeated <item> inside it becomes its own [[items.item]] array-of-tables entry.

Best Practices & Notes

Best Practices

  • Check the output for TOML datetime-shaped strings, they'll come through as plain quoted strings, not TOML's native datetime type.
  • Use TOML to XML Converter to check what a round trip does to your specific document.
  • Keep repeated elements directly under a clear wrapper tag so they map onto a clean [[section]] array-of-tables.

Developer Notes

Encoding logic lives in `toml-core.ts`'s `encodeToml`, a direct recursive renderer with no dependency on a TOML library; the corresponding `decodeToml` parses the same subset back.

XML to TOML Converter Use Cases

  • Migrating an XML config into a TOML-based tool
  • Converting an XML data export into TOML for a Rust or Python project
  • Producing a Cargo.toml- or pyproject.toml-style config from XML source data

Common Mistakes

  • Expecting TOML-native types like datetimes, everything renders as strings, numbers, booleans, or arrays/tables.
  • Expecting dotted-key shorthand in the output, this converter always uses full [section] table syntax instead.

Tips

  • Use TOML to XML Converter to check what a round trip does to your specific document.
  • Check the FAQ above if the output doesn't look like what you expected.

References

Frequently Asked Questions