JSON to XML Converter

JSON to XML: Bridging Modern APIs with Legacy Enterprise Systems

Converting JSON to XML is the essential bridge between modern REST APIs and legacy enterprise systems that rely exclusively on XML for data exchange. While JSON dominates modern web development with its lightweight, JavaScript-native format, countless enterprise systems—SOAP web services, ERP platforms (SAP, Oracle), banking integrations, healthcare HL7 feeds, and government systems—only accept XML. JSON-to-XML conversion transforms modern API data into the verbose, self-describing XML format required by these legacy systems without requiring backend infrastructure or expensive middleware.

This conversion is critical for system integration scenarios where you're pulling data from modern cloud services (Stripe, Shopify, Salesforce REST APIs) but need to push it into older systems that speak only XML. The hierarchical nature of both formats makes conversion straightforward: JSON objects become XML elements, preserving nested structures while adding XML's strict syntax requirements (opening/closing tags, proper escaping, XML declaration).

When JSON to XML Conversion is Critical

• SOAP Web Service Integration: Convert modern REST API JSON responses to XML SOAP request payloads for legacy enterprise services—critical for banking transactions, payment gateways, insurance claims processing, and B2B data exchange where SOAP remains the standard
• ERP & Legacy System Data Feeds: Transform JSON from modern apps (inventory management, e-commerce platforms) to XML for import into SAP, Oracle EBS, Microsoft Dynamics, or custom legacy ERP systems that require XML formatted batch imports
• Healthcare & HL7 Compliance: Convert patient data from JSON APIs (telehealth platforms, medical device APIs) to HL7 XML format for electronic health records (EHR) systems, hospital information systems, and regulatory reporting that mandate XML structure
• Government & Regulatory Reporting: Transform JSON business data to XML for regulatory submissions—IRS tax filings (XML required), SEC EDGAR filings, customs/trade declarations, and government contract reporting systems that exclusively accept XML
• EDI & Supply Chain Integration: Bridge modern e-commerce JSON (Shopify, WooCommerce orders) with XML-based EDI systems for purchase orders, shipping notifications (ASN), invoices, and supplier data exchange in manufacturing and retail supply chains

Understanding JSON-to-XML Transformation: Structure Mapping

Both JSON and XML are hierarchical formats, but XML's verbose tag-based syntax requires specific transformation rules. Here's how JSON structures map to XML:

{
  "order": {
    "id": "ORD-12345",
    "customer": {
      "name": "John Smith",
      "email": "john@example.com"
    },
    "items": [
      {
        "product": "Widget A",
        "quantity": 5,
        "price": 29.99
      },
      {
        "product": "Widget B",
        "quantity": 2,
        "price": 49.99
      }
    ],
    "total": 249.93,
    "status": "confirmed"
  }
}

<?xml version="1.0" encoding="UTF-8"?>
<data>
  <order>
    <id>ORD-12345</id>
    <customer>
      <name>John Smith</name>
      <email>john@example.com</email>
    </customer>
    <items>
      <record>
        <product>Widget A</product>
        <quantity>5</quantity>
        <price>29.99</price>
      </record>
      <record>
        <product>Widget B</product>
        <quantity>2</quantity>
        <price>49.99</price>
      </record>
    </items>
    <total>249.93</total>
    <status>confirmed</status>
  </order>
</data>

JSON vs XML: Format Comparison

Common JSON-to-XML Integration Scenarios

Why Enterprise Systems Require XML