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JSON to XML Converter

Transform JSON data into well-formed XML with proper escaping and structure

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Convert JSON Data Structures to Well-Formed XML

JSON and XML are the two dominant data interchange formats, and while JSON has become the default for web APIs, XML remains the standard in SOAP services, enterprise integration, configuration files (Maven, Android manifests, .NET configs), document formats (XHTML, SVG, RSS), and regulated industries that mandate XML schemas. This converter lets you take JSON output from a modern API and reshape it into valid XML for systems that require it.

Mapping JSON Structures to XML

JSON objects become XML elements whose children correspond to the object's keys. Primitive values — strings, numbers, booleans — become text content inside their element. Nested objects produce nested elements naturally. Arrays are the trickiest part: since XML has no native array concept, each array item is wrapped in a repeated child element. The converter names these elements based on the parent key, using a simple singularization heuristic (removing a trailing"s") so that a"users" array contains"user" elements.

XML Escaping and Validity

Every string value is escaped for the five XML special characters: ampersand, less-than, greater-than, double quote, and single quote. This guarantees the output is well-formed XML that any parser can consume without errors. Element names derived from JSON keys are sanitized to remove characters that are illegal in XML names, and keys that start with a digit are prefixed with an underscore.

Enterprise Integration

Legacy enterprise systems — ERP platforms, payment gateways, government filing systems — often accept only XML. When you receive data from a modern REST API in JSON format, this converter bridges the gap. Paste the API response, set the root element to match the target schema's expected name, and download the XML file for import. For recurring integrations, the output serves as a reference for building an automated transformation.

Configuration and Build Files

Some developers maintain configuration data in JSON for convenience but need to export it as XML for tools like Maven, Ant, or Android resource files. Converting a JSON structure here and adjusting the element names is faster than writing the XML by hand, especially for large or deeply nested configurations.

Privacy

Conversion runs entirely in your browser. No data is transmitted to any server, making it safe for internal configurations, API credentials, and business data.

$ faq

How are JSON arrays converted to XML? ▸
Each item in a JSON array becomes a repeated XML element. By default the element is named"item", but if the array is the value of a key, the converter uses the singular form of the key when possible. For example, a key"users" with an array value produces <users><user>...</user></users>.
How are null and boolean values handled? ▸
JSON null produces an empty self-closing element like <key/>. Booleans true and false become the text content"true" and"false". Numbers are output as-is without quotes.
What characters are escaped in the output? ▸
The five XML special characters are escaped: & becomes &amp;, < becomes &lt;, > becomes &gt;, double quotes become &quot;, and single quotes become &apos;. This ensures the output is always well-formed XML.
Can I customize the root element name? ▸
Yes. The default root element is"root" but you can type any valid XML element name. If your JSON is already an object, the root wraps it; if it is an array, the root wraps the repeated items.
Does the output include an XML declaration? ▸
Yes, the standard <?xml version="1.0" encoding="UTF-8"?> declaration is included at the top. You can remove it manually if your use case does not need it.
What if my JSON keys contain spaces or special characters? ▸
XML element names cannot contain spaces or most special characters. The converter replaces spaces with underscores and strips other invalid characters to produce valid element names. A warning appears if any key was modified.
Is my data sent to a server? ▸
No. All conversion runs client-side in JavaScript. Nothing is uploaded or stored.