YAML to XML Converter

The YAML to XML Converter transforms YAML into well-formed XML. Paste your YAML and get structured XML suitable for legacy systems, SOAP services, and integrations that still require XML — letting you keep authoring in readable YAML while producing the XML those systems expect.

How the Conversion Works

YAML represents structure with indentation and supports scalars, mappings, and sequences (lists). The converter reads that structure and rewrites it as XML: mappings become nested elements, and list items become repeated elements so sequences translate naturally. The output is valid, well-formed XML with proper opening and closing tags.

Bridging Modern and Legacy Formats

Plenty of teams prefer to write and maintain configuration or data in YAML because it is concise and readable, yet they still have to feed systems — enterprise middleware, SOAP endpoints, older document pipelines — that only accept XML. Rather than maintain two hand-written copies, you can keep YAML as the single source of truth and convert to XML whenever a downstream system needs it. That keeps your editing experience pleasant while still satisfying the strict, tag-based format the other side requires.

Worked Example

Given this YAML:

server:
  host: localhost
  port: 8080

the converter produces XML:

<server>
  <host>localhost</host>
  <port>8080</port>
</server>

The indented YAML keys became properly nested XML elements.

Key Features

• Converts YAML into well-formed XML
• Preserves nested structure and lists
• Handles common YAML scalar types
• Copy or download the XML output
• Runs entirely in your browser — no upload

Common Use Cases

• Legacy integration: feed XML-only systems from modern YAML configs.
• Payload generation: build XML request bodies from readable YAML source.
• Interoperability: bridge YAML tooling with XML-based services.
• Migration: convert configuration between formats without retyping.

Tips for Valid XML

Because XML element names come from your YAML keys, keep those keys free of spaces and leading digits, which are not valid in element names. Confirm your YAML indentation is correct before converting, since YAML structure depends entirely on whitespace and a misaligned line changes the hierarchy. Lists convert to repeated elements, so a YAML sequence of three items becomes three sibling tags — check that this matches what the receiving system expects. Reviewing the first record of the output verifies the shape before you rely on the whole document.

FAQ

How are YAML lists handled?

Sequences become repeated XML elements so lists translate naturally.

Is the XML well-formed?

Yes — the output is valid, well-formed XML ready to use.

Can I reverse it?

Yes — use the XML to YAML Converter for the opposite direction.

What makes an invalid element name?

Element names cannot contain spaces or start with a digit, so keep YAML keys tidy for valid XML.

Can I download the XML?

Yes — copy it or download it as a file.

Is my data private?

Yes. Conversion runs locally in your browser.

Related Tools

Reverse it with the XML to YAML Converter, or generate XML from spreadsheets with the CSV to XML Converter.