YAML to XML Converter
Convert YAML to XML online, entirely in your browser. This YAML to XML converter turns mappings and lists from any .yaml or .yml file into well-formed XML markup. Because XML has no single canonical mapping for keys and arrays, the tool applies clear, documented conventions and calls out anything ambiguous.
Drop your YAML file here
or
Supports .yaml and .yml files, processed entirely on your device
YAML →JSON
Your converted output will appear here.Conversion notes
What to expect
- Mappings become nested elements; list items repeat the parent tag name.
- Keys that aren't valid XML tag names are automatically sanitized.
- A short conversion-notes panel documents any assumptions made.
Example
site:
name: Aperture Docs
version: 1.4.2
active: true
tags:
- web
- cli
- tools
author:
name: Jane Doe
email: jane@example.com
<?xml version="1.0" encoding="UTF-8"?>
<root>
<site>
<name>Aperture Docs</name>
<version>1.4.2</version>
<active>true</active>
</site>
<tags>web</tags>
<tags>cli</tags>
<tags>tools</tags>
<author>
<name>Jane Doe</name>
<email>jane@example.com</email>
</author>
</root>
YAML to XML Converter FAQ
How are YAML lists represented in XML?
Each item in a list is written as a repeated element using the list's key as the tag name, nested under its parent element.
What happens to invalid XML tag names?
Keys containing spaces or symbols are converted to a safe tag name, and a note explains exactly what changed.
Can I convert YAML to XML in Python or Java?
Yes. In Python, load the YAML with PyYAML and write it out with `xml.etree.ElementTree`. In Java, SnakeYAML paired with the built-in `javax.xml` APIs (or Jackson's XmlMapper) does the same job. This tool is a quicker option when you don't want to write or run code for a one-off conversion.
Can I convert XML back to YAML?
This tool focuses on YAML to XML. A reverse converter is on our roadmap of related developer tools.
Is there a difference between .yml and .yaml?
No. ".yml" and ".yaml" are just two file extensions for the exact same format — this converter accepts either one, so a "yml to XML" conversion and a "yaml to XML" conversion produce identical results.