YAML is the modern favourite for human-written configs, while XML remains the required format for many older systems, enterprise tools and data exchanges. This converter moves data the other way in your browser: paste simple YAML with mappings and lists, and get XML with nested elements, repeated items and text values preserved. It handles the mapping and list shapes that real configs use, and it pairs naturally with the XML-to-YAML converter for round trips between the two formats. This kind of converter earns its place in a workflow when it removes a manual, error-prone translation step between two formats that should already agree. Because everything runs in the browser tab, there is no waiting for a server round trip, no account to create, and no copy of the input left on a remote machine. That privacy matters for work documents and data, and the speed matters when a conversion blocks the next step of a larger task. The output is shown in full on purpose: checking the converted result before pasting it elsewhere prevents silent errors from spreading into files, imports, and published pages. Used regularly, a small set of reliable converters replaces a surprising amount of tedious retyping for everyday format work. People reach for this tool in different situations, but the pattern is the same: a small job that should take a minute, not an afternoon of setup. Students use it for assignments, small business owners use it for day-to-day work, and creators use it for content that needs to look professional without a production budget. In each case the tool succeeds when it disappears into the task, giving a correct result and getting out of the way. That is why the interface stays simple, why the result is shown before any download, and why nothing here asks for an account before doing the job it promises.
Quick Answer: Paste YAML with mappings and lists, then click Convert. Nested mappings become nested XML elements in the output.
Free Online Tool
YAML to XML Converter
How to Use the YAML to XML Converter
- Paste your YAML document into the input box.
- Click Convert.
- Read the XML output in the result box.
- Check that nesting and lists converted correctly.
- Copy the XML into your target system.
Key Features
- YAML mappings converted to nested XML elements
- YAML lists converted to repeated XML elements
- Plain-text values preserved exactly
- Runs entirely in your browser, with no uploads
- Free with no sign-up
Best Practices and Tips
- Keep YAML indentation consistent at two spaces per level.
- Test the XML in the target system before replacing the YAML source.
- Keep the original YAML file until the XML version works in place.
- Avoid tabs in YAML input, since YAML forbids them for indentation.
- Use the paired XML-to-YAML tool for round-trip checks.
Common Mistakes to Avoid
- Indenting YAML with tabs, which YAML does not allow.
- Deleting the YAML source before the XML version is tested.
- Expecting deeply exotic YAML features from a simple converter.
- Assuming the XML tag names match the target system without checking.
Frequently Asked Questions
What YAML shapes are supported?
Mappings (key: value pairs) and lists (dash items), nested by indentation. These cover the overwhelming majority of real configuration files.
How are lists converted?
Each list item becomes a repeated XML element with the parent key as its tag, which is the standard way to represent collections in XML.
Can I round-trip YAML to XML and back?
For simple mappings and lists, yes, and the paired converters make that a useful check. Attribute-heavy XML will not round-trip exactly, because YAML has no native attribute concept.
Does it handle tabs?
No, and neither does YAML itself. Use spaces for indentation, two per level, for reliable conversion.
Is this tool free?
Yes, free and unlimited, with no account required.