JSON to XML converter
Convert JSON to XML free online for SOAP APIs, Java apps, and enterprise integrations. Clean element mapping, UTF-8 safe, 500 MB limit, no signup required.
Drop a file to convert here
or click to browse
About Extensible Markup Language
Common Use Cases
- Converting REST API responses for SOAP services
- Preparing data for Java and .NET XML parsers
- Enterprise system integration and data exchange
JSON dominates modern APIs, but plenty of enterprise systems, SOAP services, and legacy platforms still require XML. Java, .NET, and many B2B integrations use XML schemas for validation and data exchange. Converting JSON to XML bridges the gap between modern REST endpoints and XML-first infrastructure without manual rewriting.
JSON uses key-value pairs with curly braces and square brackets. XML uses nested elements with opening and closing tags, supports attributes, and can be validated against XSD schemas.
Why Convert JSON to XML?
Feed data into SOAP and enterprise APIs
SOAP web services require XML payloads. Convert your JSON data to XML and send it directly to enterprise endpoints that expect structured XML documents.
Work with Java and .NET XML tools
The Java and .NET ecosystems have mature XML parsers, XSLT processors, and XPath query engines. Converting to XML lets you leverage those tools for transformation and validation.
Validate against XSD schemas
XML supports schema validation through XSD, DTD, and Schematron. Once your data is in XML, you can validate its structure against a schema before submitting it to downstream systems.
Bridge REST and legacy systems
Many organizations run a mix of modern REST APIs and legacy XML-based infrastructure. Converting JSON to XML is often the simplest way to connect the two without rebuilding either side.
When to use each
Use JSON when...
- Building REST APIs and JavaScript apps
- Data is simple key-value pairs
- File size and parsing speed matter
- The consumer is a browser or mobile app
- Human readability with minimal syntax
Use XML when...
- Working with SOAP services and enterprise systems
- You need schema validation with XSD
- You need attributes on elements
- The consumer is Java, .NET, or legacy middleware
- Document-oriented data with mixed content
Common use cases
- Converting REST API responses for SOAP services
- Preparing data for Java and .NET XML parsers
- Enterprise system integration and data exchange
How to use
- Upload your JSON file. Drag and drop a .json file onto the upload area, or click to browse. Files up to 500 MB are supported.
- Start the conversion. Click Convert File. JSON keys are mapped to XML elements, arrays become repeating child elements, and the output gets a proper XML declaration.
- Download your XML. Save the .xml file and use it in SOAP clients, Java parsers, XSLT pipelines, or any XML-based workflow. Files are deleted from our servers within 1 hour.
Frequently asked questions
- How are JSON arrays converted to XML?
- Each item in a JSON array becomes a repeating XML element. For example, a "users" array with three objects produces three <users> child elements.
- What happens to JSON null values?
- Null values are represented as empty XML elements. The element is present in the output but contains no text content.
- Does the output include an XML declaration?
- Yes. The output starts with <?xml version="1.0" encoding="UTF-8"?> and is well-formed XML ready for any parser.
- Can I validate the output against an XSD schema?
- Yes. The output is well-formed XML that you can validate against any XSD schema using standard XML tools.
- Are nested JSON objects preserved?
- Yes. Nested objects become nested XML elements, preserving the full hierarchy of your source data.
- Is converting JSON to XML free?
- Yes. Free with no signup. Anonymous users get a daily allowance, registered accounts get higher limits, and Premium or Lifetime members get unlimited conversions.
- What is the file size limit?
- The maximum file size is 500 MB per conversion.