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YAML to XML online

Convert YAML to XML format — browser-side, nothing uploaded.

YAML to XML Converter logo
by
CHUNKY
MUNSTER
Root element:
YAML INPUT0 CHARS
XML OUTPUT0 CHARS

About YAML to XML

This tool parses YAML and serialises it as an XML document. Objects become XML elements, arrays become repeated elements, and scalars become text content. All processing happens in your browser — no data is sent to a server.

How to Use the YAML to XML Converter

  1. Paste or enter your input into the text field.
  2. Configure any options (format, delimiter, encoding, or mode) using the controls above the output.
  3. The result updates instantly — no submit button required for most operations.
  4. Click Copy or Download to take the output to your next step.

Convert YAML — the format favoured by Kubernetes, Ansible, and Docker Compose — into XML for systems that still expect it: SOAP services, legacy enterprise integrations, and many sitemap or feed pipelines. Mapping keys become element names, sequences become repeated child elements, and @-prefixed keys are emitted as XML attributes.

How the YAML to XML Converter Works

Special XML metacharacters in values are escaped to entities (&, <, >, ", '), so the output is always well-formed. Include or omit the <?xml version="1.0"?> declaration and choose pretty-printed indentation or a single compressed line. The conversion is the inverse of XML→YAML, so a round-trip preserves structure.

Frequently Asked Questions

How does the converter decide what becomes an attribute?

Keys whose name starts with @ are emitted as attributes (e.g. "@id": 3 becomes <item id="3">). Every other key becomes a child element. The convention matches the inverse XML→YAML mapping so a round-trip is lossless.

How are YAML sequences converted?

Each item in a sequence becomes a repeated child element with the same name as the sequence’s key. So {items: [a, b]} becomes <items>a</items><items>b</items> by default — or you can wrap them in a parent <items> element with each child as <item>.

Are special characters escaped?

Yes. The XML metacharacters &, <, >, ", and ' are escaped to entities so the output is always well-formed and parseable by any XML reader.

Is the YAML uploaded anywhere?

No — parsing uses a JavaScript YAML library in your browser and XML emission is local string assembly.

Explore the full suite of DATA FORMATS tools and 290+ other free utilities at Chunky Munster.