JSON to XML Converter

Convert JSON data to well-formed XML instantly — free online converter with customizable root element.

About JSON to XML Conversion

JSON and XML are the two dominant data serialization formats in enterprise software. While JSON has largely replaced XML for REST APIs, XML remains the standard for SOAP web services, enterprise integration platforms (ESBs), configuration files (Maven, Ant, Spring), document formats (DOCX, XLSX), and legacy systems.

Converting JSON to XML is a common task when integrating modern microservices with legacy enterprise systems, working with message queues like IBM MQ, or interfacing with SOAP APIs from a REST-based application. Our converter handles all JSON types — objects, arrays, strings, numbers, booleans, and null — mapping them to appropriate XML structures.

JSON arrays are converted to repeated elements with the parent key as the tag name. JSON objects become nested XML elements. Primitive values become text content. You can customize the root element name and optionally include the XML declaration header.

Frequently Asked Questions

How are JSON arrays converted to XML?
JSON arrays produce repeated XML elements. For example, {"colors":["red","blue"]} becomes <colors>red</colors><colors>blue</colors> wrapped in the parent element. Array items can be wrapped in an <item> tag when the array is at the root.
What happens with numeric JSON keys?
XML element names cannot start with numbers. Numeric keys are automatically prefixed with an underscore (e.g., "1" becomes "_1") to produce valid XML.
Can I convert back from XML to JSON?
Yes, use the XML to JSON tool. Note that round-trip conversion may not be perfect since JSON arrays and objects both map to XML elements, so some type information can be lost.

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