JSON to XML Converter

Many enterprise systems, SOAP services, government portals and accounting tools still accept only XML. This converter maps JSON to XML in a predictable way and takes care of the details that hand-written converters usually miss: escaping special characters, fixing invalid tag names and supporting attributes.

1. Paste JSON or drop a .json file.
2. Prefix a key with @ if it should become an attribute instead of a child element.
3. Review the XML preview — it updates as you type.
4. Copy the XML or download it as an .xml file.

Example

[
  { "@id": 101, "name": "Jane & Co", "skills": ["Go", "SQL"], "manager": null },
  { "@id": 102, "name": "Sam <Lead>", "address": { "city": "Rabat" } }
]

<?xml version="1.0" encoding="UTF-8"?>
<root>
  <item id="101">
    <name>Jane &amp; Co</name>
    <skills>Go</skills>
    <skills>SQL</skills>
    <manager/>
  </item>
  <item id="102">
    <name>Sam &lt;Lead&gt;</name>
    <address>
      <city>Rabat</city>
    </address>
  </item>
</root>

The @id keys become attributes, the array becomes repeated <skills> elements, null becomes an empty element, and & and < in the names are escaped so the result is valid XML.

Mapping rules

• The document root is <root>; each record of a JSON array becomes an <item>.
• Object keys become child elements; nested objects become nested elements.
• Keys starting with @ become attributes; a #text key becomes the element's text.
• Arrays become repeated elements with the same name.
• null becomes a self-closing element such as <manager/>.

Invalid tag names are fixed

JSON keys can contain anything; XML names cannot. Spaces and symbols are replaced by underscores (first name → first_name), and names that start with a digit or with "xml" get a leading underscore (2024 → _2024). This guarantees the output always parses.

Escaping

The characters &, <, >, " and ' are escaped in text and attributes, and control characters that XML 1.0 forbids are removed. The file declares UTF-8 encoding, so international text needs no further escaping.

Round trips

The XML to JSON converter uses the same @attribute and #text conventions, so you can convert JSON to XML and back without losing structure. Click the swap button to try it.

Convert JSON to XML in code

For one-off files the tool above is quickest. To automate the same task in a script or pipeline, these snippets are a good starting point.

Python (xmltodict)

import json
import xmltodict  # pip install xmltodict

with open("data.json", encoding="utf-8") as f:
    data = json.load(f)

print(xmltodict.unparse({"root": {"item": data}}, pretty=True))

Node.js (fast-xml-parser)

// npm install fast-xml-parser
import { XMLBuilder } from "fast-xml-parser";

const builder = new XMLBuilder({ ignoreAttributes: false, attributeNamePrefix: "@", format: true });
const xml = builder.build({ root: { item: data } });

Frequently asked questions

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