YAML to XML Converter
Move configuration from YAML into XML — useful when a legacy service or build tool only accepts XML input.
Your data stays on your device
Input — YAML
- characters
- 0
- lines
- 0
- size
- 0 B
Output — XML
- characters
- 0
- lines
- 0
- size
- 0 B
Options
XML needs exactly one root element, which JSON does not provide.
About this tool
This conversion runs in two stages: the YAML is parsed into a value using a YAML 1.2 parser, then that value is serialised as XML. Doing it in one page saves the round trip through JSON, but the semantics are identical to running the two converters back to back.
YAML sequences become repeated sibling elements, mappings become nested elements, and scalars become escaped text. Anchors and aliases are expanded during parsing, so shared blocks appear in full at each use site.
How to use this tool
- Paste YAML or upload a .yaml or .yml file.
- Set the root element name for the XML document.
- Choose pretty-printing and whether to emit the XML declaration.
- Press Convert and copy or download the result.
Key features
- YAML 1.2 parsing with anchors and aliases resolved
- Sequences expanded into repeated elements
- Configurable root element name
- Reserved characters escaped in all text content
- Pretty-printed or compact output
- Optional XML declaration
Example
Input — YAML
app: web
tags:
- prod
- euOutput — XML
<?xml version="1.0" encoding="UTF-8"?>
<root>
<app>web</app>
<tags>prod</tags>
<tags>eu</tags>
</root>Good to know
- YAML comments are lost. XML comments could be emitted, but there is no reliable way to know where they belong after parsing.
- Only the first document of a multi-document YAML stream is converted.
- Boolean and null values become their text forms, since XML has no type system without a schema.
Frequently asked questions
Why convert YAML to XML at all?
Usually to feed an older system — Ant and Maven builds, some Java frameworks, and a number of enterprise import endpoints accept XML only, while the source of truth is maintained in YAML.
How are YAML lists represented?
As repeated elements sharing the parent key name, the same convention used by the JSON to XML converter.
What happens to anchors?
They are expanded, so each alias site contains a full copy of the anchored content. XML has no equivalent reference mechanism.
Can I go back the other way?
Yes, with the XML to YAML tool — though comments and anchors will not reappear, since the information was not carried through.
Your data stays on your device
Your data is processed locally in your browser and is not uploaded to our server. This page keeps working after you go offline, because there is nothing to send.