JSON to XML Converter

Q: How do I convert JSON to XML?

Paste JSON into the left panel. Each object key becomes an XML element, nested objects become nested elements and the result appears instantly on the right. Copy it or download it as output.xml.

Q: How are JSON arrays converted to XML?

An array under a key becomes repeated sibling elements with that key's name, so {"book": [{...}, {...}]} produces two elements. A top-level array is wrapped in the root element with one per entry, and arrays nested directly inside arrays are wrapped in an element.

Q: How do I create XML attributes from JSON?

Prefix the key with @ (or the attribute prefix you choose). {"book": {"@id": "bk101", "title": "Guide"}} becomes Guide . Use the #text key for an element's text when it also has attributes.

Q: What happens if my JSON has more than one top-level key?

XML documents need exactly one root element. If your JSON is an object with a single key whose value is an object, that key becomes the root. Otherwise everything is wrapped in a root element, whose name you can change.

Q: What about keys that are not valid XML names?

Characters that XML does not allow in names (such as spaces or $) are replaced with underscores, and names that start with a digit or with "xml" get a leading underscore. Collisions and invalid XML characters are reported as errors. Namespace prefixes need declarations.

Q: Is my JSON uploaded anywhere?

No. The conversion runs entirely in your browser; nothing is sent to a server.

Convert JSON to well-formed XML: keys become elements, @-prefixed keys become attributes and arrays become repeated elements. Switch direction to turn XML back into JSON (or open the dedicated XML to JSON converter). Runs 100% in your browser.

JSON → XML

XML → JSON

JSON input

XML output

attr

root

XML declaration

How JSON maps to XML

JSON	XML
{"title": "Guide"}	<title>Guide</title>
{"book": {"@id": "b1"}}	<book id="b1"/>
{"note": {"@lang": "en", "#text": "Hi"}}	<note lang="en">Hi</note>
{"tag": ["a", "b"]}	<tag>a</tag><tag>b</tag>
{"empty": null}	<empty/>

This mapping is lossy: comments and processing instructions are dropped, text is trimmed, and mixed text/child ordering is not preserved. Repeated siblings are grouped, so their original order relative to other names is lost.
JSON names may be normalized to XML names. Empty arrays disappear, and null, empty text and empty elements cannot always be distinguished when converting back.
XML has no data types: numbers and booleans become text in XML, and are detected again when converting back to JSON.
A single repeated element can't be told apart from a single object, so one <book> becomes an object and two become an array.

JSON to XML Converter

How JSON maps to XML

FAQ

How do I convert JSON to XML?

How are JSON arrays converted to XML?

How do I create XML attributes from JSON?

What happens if my JSON has more than one top-level key?

What about keys that are not valid XML names?

Is my JSON uploaded anywhere?

See also