JSON to XML Converter — Free Online Tool

Need to convert JSON data to XML format? Our free online JSON to XML converter transforms any valid JSON object into a properly structured XML document instantly — no sign-up, no server upload, completely in your browser.

What Is JSON to XML Conversion?

JSON (JavaScript Object Notation) and XML (eXtensible Markup Language) are two of the most widely used data interchange formats. While JSON dominates modern REST APIs and web applications due to its compactness and native JavaScript support, XML remains the standard in enterprise systems, SOAP web services, document storage (like Microsoft Office formats), Android app configuration, and many legacy integration layers.

Converting JSON to XML is necessary when:

• Integrating with legacy enterprise systems — Older SOAP-based APIs, ERP systems (SAP, Oracle), and mainframe integration layers typically speak XML
• Generating Android resource files — Android’s res/xml/ directory uses XML exclusively
• Building RSS/Atom feeds — Feed formats are XML-based
• Interoperating with .NET XML serialization — .NET’s XmlSerializer produces and consumes XML
• Working with XSLT transformations — XSLT processes XML inputs and produces XML or HTML outputs
• Archiving structured data — XML’s explicit schema support (via XSD) makes it more suitable for long-term document archiving

How to Use the JSON to XML Converter

1. Paste your JSON into the input textarea. The JSON can be an object, array, or any valid JSON value.
2. Optional: Customize the root element name (default: root). The root element wraps the entire converted output.
3. Click Convert to XML.
4. The formatted XML appears in the output panel, complete with the XML declaration header.
5. Click Copy to copy the output to your clipboard.

Your JSON data is processed entirely in your browser — not transmitted to any server.

Example

JSON Input:

{
  "user": {
    "id": 42,
    "name": "Alice Johnson",
    "email": "alice@example.com",
    "roles": ["admin", "editor"],
    "active": true
  }
}

XML Output:

<?xml version="1.0" encoding="UTF-8"?>
<root>
  <user>
    <id>42</id>
    <name>Alice Johnson</name>
    <email>alice@example.com</email>
    <roles>admin</roles>
    <roles>editor</roles>
    <active>true</active>
  </user>
</root>

Notice how JSON arrays (like roles) are represented as repeated XML elements with the same tag name — the standard XML convention for representing lists.

How JSON Types Map to XML

Special Characters in XML

XML has five reserved characters that must be escaped to appear in text content. Our converter handles this automatically:

If your JSON values contain any of these characters, the output XML will correctly escape them.

JSON vs. XML — Key Differences

Frequently Asked Questions

Can I convert a JSON array at the root level?

Yes. If your JSON is a root-level array (e.g., [{"name":"Alice"}, {"name":"Bob"}]), each item in the array will be output as a repeated element using the root element name you specify.

What happens to JSON null values?

JSON null values are converted to self-closing XML tags: <tagName/>. This is the standard XML convention for representing absent or empty values.

Does the output XML validate against a schema?

The converter creates well-formed XML (valid structure, correct escaping) but does not generate an associated XSD schema. If you need schema validation, you would need to write or generate a matching XSD file separately.

Can I convert deeply nested JSON?

Yes. The converter recursively processes nested objects and arrays to arbitrary depth, creating properly nested XML element trees.

What encoding does the output use?

All output XML includes the declaration <?xml version="1.0" encoding="UTF-8"?>. The output is standard UTF-8, which supports the full Unicode character set.

Does this tool support JSON with numeric keys?

XML element tag names cannot start with a number (it’s a constraint of XML naming rules). If your JSON has numeric keys like {"1": "value"}, the conversion will include them as-written, but the resulting XML may not be valid. Use string keys for XML-compatible JSON.

Is there a file size limit?

This tool runs in your browser and has no server-enforced size limit. Very large JSON documents (multi-megabyte) may take a moment to process depending on your device’s performance.