Free XML to TOML Converter — convert XML into TOML config in your browser

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🔄 XML to TOML — Free Online Tool

Convert XML to TOML online, free. XML is a verbose, self-describing markup format used in SOAP, RSS and enterprise systems. TOML is a readable configuration format built around key/value pairs and tables. XML to TOML conversion parses your XML against the W3C XML 1.0 grammar (https://www.w3.org/TR/xml/), builds an in-memory model of its keys, nested objects and arrays, then re-serializes it as valid TOML following the TOML v1.0.0 conventions. Processing runs in your browser in JavaScript with no upload or server round-trip — no size limit beyond your device's memory, so multi-megabyte documents convert in milliseconds and sensitive payloads never leave your machine. Typical uses include Rust Cargo & Python pyproject config, app settings files and tool configuration.

🚀 Why use this XML to TOML tool?

It maps the full structure of your XML onto well-formed TOML, following the TOML v1.0.0 conventions. 100% free, no registration, and complete privacy — everything runs locally in your browser, so your data never touches a server.

Key Features

⚡Instant, in-browser

Paste XML and convert TOML immediately. Conversion runs client-side, so there is no upload wait and large documents stay fast.

🧩Structure-aware mapping

Nested XML objects, tables and arrays are mapped faithfully onto TOML.

🔒100% private

Your XML never leaves your device — everything is processed locally in JavaScript, with nothing logged or stored.

🆓Free, no signup

Unlimited conversions with no account, no quotas, and no watermark. Works on desktop and mobile.

Popular Use Cases

TOML pipelines

  • • Move XML data into TOML-only tools
  • • Rust Cargo & Python pyproject config
  • • app settings files

Where TOML is used

  • • Rust Cargo & Python pyproject config
  • • app settings files
  • • tool configuration

Quick one-off conversion

  • • Paste XML, copy TOML
  • • No install or CLI needed
  • • Repeatable and shareable

What It Handles

Structure

  • ✓ Nested objects & tables
  • ✓ Arrays / lists
  • ✓ Deeply nested documents

Values

  • ✓ Strings, numbers, booleans
  • ✓ Dates where supported
  • ✓ Null / empty handling

Workflow

  • ✓ Copy or download output
  • ✓ Load an example to try it
  • ✓ Validate & format the input

Worked example

A XML document and its TOML equivalent:

XML input:

<user>
  <name>Alice</name>
  <age>30</age>
  <email>[email protected]</email>
</user>

Output:

name = "Alice"
age = 30
email = "[email protected]"

Sources & References

Frequently Asked Questions

How do I convert XML to TOML?

Paste your XML into the editor and press "Convert to TOML". The tool parses it against the W3C XML 1.0 grammar, then re-serializes it as TOML following TOML v1.0.0 conventions — instantly and entirely in your browser. You can validate or format the XML first to be sure it is clean.

How is XML structure represented in TOML?

XML has no native numbers, booleans or arrays. Repeated child elements become lists in TOML, attributes and element text become fields, and values stay strings unless TOML coerces them — so review numeric or boolean fields after converting.

Does converting XML to TOML preserve data types?

Numbers, booleans and null are preserved as native TOML types wherever TOML supports them, so standard documents convert losslessly and can be read back into the same structure.

What is the difference between XML and TOML?

XML (eXtensible Markup Language) (XML) — XML is a verbose, self-describing markup format used in SOAP, RSS and enterprise systems. TOML (Tom's Obvious Minimal Language) (TOML) — TOML is a readable configuration format built around key/value pairs and tables. This converter maps the structure of your XML onto TOML so you can use it for Rust Cargo & Python pyproject config.

Does the converter validate my XML first?

Yes. Invalid XML is flagged with a clear error before anything is converted. Common XML problems to check are matched start and end tags, a single root element, and quoted attribute values. Starting from clean input keeps the generated TOML accurate.

Is my XML data private?

Yes. The entire XML-to-TOML conversion runs locally in your browser in JavaScript — your XML is never uploaded, logged or stored. That matters when the data is something like SOAP web services, which should not leave your machine.

Where can I use the TOML output?

The generated TOML is ready for Rust Cargo & Python pyproject config, app settings files and tool configuration. Copy or download it and drop it straight into your tooling.

🎓 Pro Tips

  • Tip 1: Validate or format your XML first (the Validate / Format buttons) so the converter works from clean, W3C XML 1.0-conformant input.
  • Tip 2: Keep an eye on type coercion: XML and TOML don't always represent numbers, dates and nulls the same way.
  • Tip 3: Authoritative reference for the input format: W3C XML 1.0 — https://www.w3.org/TR/xml/.
  • Tip 4: For the output, follow the TOML v1.0.0 (https://toml.io/en/v1.0.0) conventions in your codebase.

XML to TOML conversion transforms Extensible Markup Language (XML) documents into TOML (Tom's Obvious Minimal Language), a configuration file format designed for simplicity and readability. XML is hierarchical with closing tags; TOML is flat and key–value oriented, favored by developers for its clean syntax. This free tool converts XML to valid TOML instantly in your browser — no upload, no signup, and your data never leaves your device.

How do I convert XML to TOML?

Converting XML to TOML takes three steps and happens instantly in your browser:

  1. Paste your XML into the input editor on the left (or load the example).
  2. Click Convert — the tool maps XML elements to TOML keys and tables, flattening where needed and using table arrays for repeated elements.
  3. Copy or download the TOML output from the right panel. The config is ready to use with TOML parsers.

XML vs TOML: what changes

XML uses nested tags and attributes; TOML uses dot-separated keys and table syntax. When converting, XML elements become TOML keys, nested elements become TOML tables (e.g., [section.subsection]), and repeated elements become TOML arrays of tables (e.g.,[[items]]). TOML is far more readable for humans than XML, making it ideal for configuration files where clarity matters.

Key benefits of converting XML to TOML

  • Human-readable config: TOML syntax is cleaner and more intuitive than XML, reducing errors when editing configuration by hand.
  • Smaller file size: TOML eliminates closing tags and XML overhead, producing more compact configuration files.
  • Rust ecosystem adoption: TOML is the standard for Rust project configuration (Cargo.toml), making this conversion essential for Rust developers.
  • Wide tool support: TOML libraries exist for most languages (Python, Go, Ruby, Node), enabling easy parsing and validation.
  • Private and instant: Conversion runs entirely in your browser — nothing is uploaded to a server.

Practical use cases for XML to TOML conversion

  • Modernizing configuration: Convert legacy XML config files into cleaner TOML format for easier maintenance and readability.
  • Rust project setup: Transform XML metadata or settings into TOML for Cargo projects and Rust applications.
  • DevOps and infrastructure: Convert XML infrastructure definitions into TOML for Terraform, Ansible, or other IaC tools.

Start converting XML to TOML

Paste your XML above and convert it to clean, readable TOML in one click. Whether you are modernizing configuration, setting up a Rust project, or simplifying infrastructure definitions, this tool generates accurate TOML instantly and privately.