JSON to XML Converter
Convert JSON to XML online instantly. Handles nested objects, arrays, and custom root element names with proper XML formatting — no signup required.
About the JSON to XML Converter
The DevToolHeaven JSON to XML Converter transforms JSON data into well-structured XML using a recursive conversion algorithm that handles nested objects, arrays, primitive values, and null values correctly.
Customize the root element name, array item element name, and indentation to match your target XML schema. XML requires a single root element that wraps all content — the default is "root" but you can rename it to match your schema (e.g. "data", "response", or "config").
JSON arrays are converted to repeated XML elements. Each array item becomes a child element named with the item element name you specify — for example "item" by default, or "user" for a list of users. This produces idiomatic, schema-friendly XML rather than awkward generic markup.
Values containing XML reserved characters are automatically escaped: < becomes <, > becomes >, & becomes &. JSON keys with characters invalid in XML element names (spaces, @, #, /) are sanitized to underscores. Keys starting with a digit get a _ prefix. The original data values inside elements are always preserved unchanged.
JSON to XML conversion is commonly used for: integrating with SOAP web services that require XML payloads, generating RSS or Atom feeds from JSON data, exporting records for consumption by legacy enterprise systems, creating configuration files for XML-based frameworks like Spring, and converting REST API responses for XML-native processing pipelines.
All conversion is done 100% client-side in your browser. No data is sent to any server, making this tool safe for converting sensitive JSON payloads or proprietary API responses.
Frequently Asked Questions
JSON objects become XML elements with child elements for each key. JSON arrays become a parent element containing repeated child elements (named "item" by default). Primitive values (strings, numbers, booleans) become text content of their element. Null values get an xsi:nil="true" attribute.
XML requires a single root element that wraps all other elements. Since JSON objects and arrays do not have a root element name, you specify one. The default is "root" but you can change it to any valid XML element name like "data", "response", or "config".
When a JSON array is converted, each item in the array needs an XML element name. The default is "item" producing <item> elements. Change this to match your expected schema — for example "user" for an array of user objects or "product" for a product list.
XML element names cannot start with a number or contain spaces, &, <, >, ", or '. If your JSON keys contain these characters, they are automatically replaced with underscores in the XML output. Keys starting with numbers get an underscore prefix.
The XML declaration <?xml version="1.0" encoding="UTF-8"?> is the first line that identifies the document as XML and specifies its version and character encoding. It is recommended for standalone XML files but can be omitted when embedding XML in other documents.
Currently DevToolHeaven supports JSON to XML conversion. XML to JSON conversion is planned for a future update. For the reverse operation, the JSON to YAML and CSV to JSON tools follow similar conversion patterns if you need to transform data between formats.
Values containing XML reserved characters are automatically escaped to their entity equivalents: < becomes <, > becomes >, & becomes &, " becomes ", and ' becomes '. This ensures the produced XML is always well-formed and parseable by any XML library or processor.
XML element names follow stricter rules than JSON keys. Names cannot start with a number, cannot contain spaces, and cannot include characters like @, #, $, or /. Keys violating these rules are automatically sanitized — invalid characters become underscores and names starting with a digit get a _ prefix. The original data value inside the element is always preserved unchanged.
JSON uses a compact key-value syntax with arrays and objects, making it easier to read and parse in JavaScript. XML uses verbose opening and closing tags, supports attributes and namespaces, and has a larger ecosystem of standards (XPath, XSLT, XML Schema). JSON is preferred for modern REST APIs; XML is common in enterprise systems, SOAP APIs, and document formats like SVG and DOCX.
Paste your JSON response here, set an appropriate root element name (like "request" or "envelope"), and convert. Copy the XML output and wrap it in the required SOAP envelope structure for your service. Note that SOAP has specific namespace requirements — you may need to add xmlns attributes manually after conversion.
Well-formed XML follows the XML specification: a single root element, properly nested elements, quoted attribute values, and escaped special characters. This tool always produces well-formed XML — all special characters in values are escaped, element names are sanitized, and the structure is always properly nested. You can verify the output in any XML validator.
This tool produces clean XML without namespaces. For namespace support, manually add xmlns attributes to the output — for example change <root> to <root xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">. Namespace requirements depend on the specific XML standard or SOAP service you are targeting.