JSON to XML / XML to JSON

About JSON / XML Converter

JSON (JavaScript Object Notation) and XML (Extensible Markup Language) are both used for structured data representation, but they have fundamentally different syntaxes. JSON uses key-value pairs with curly braces and arrays with square brackets, while XML uses hierarchical tags with attributes and text content. This converter translates between the two formats, mapping JSON objects to XML elements, JSON arrays to repeated sibling elements, and JSON primitives to XML text content. XML attributes are handled through a special key convention (e.g., @attributes) in the JSON representation. The tool handles nested structures at any depth. All processing runs client-side in your browser. For JSON formatting and validation, see our JSON Formatter, and for XML formatting, use our XML Formatter.

How to Use JSON / XML Converter

1. Select the Mode: choose "JSON to XML" or "XML to JSON."
2. Paste your source data into the Input area.
3. The tool automatically converts to the target format and displays the result.
4. Click Copy result to copy the converted output to your clipboard.

Key Features

• Bidirectional conversion — Convert JSON to XML or XML to JSON in a single tool.
• Nested structure support — Handles deeply nested objects and arrays at any depth level.
• XML attribute handling — Maps XML attributes to/from a special key in JSON for lossless round-trip conversion.
• Well-formed output — Produces properly structured XML and valid JSON in all conversions.
• One-click copy — Copy the result to your clipboard for immediate use.
• Browser-based privacy — All conversion runs locally in your browser with no server upload.

When to Use This Tool

• Integrating a JSON API with an XML-based system (e.g., SOAP services, legacy enterprise platforms).
• Converting XML configuration files to JSON for use in modern applications.
• Transforming XML responses from older APIs into JSON for easier processing in JavaScript.
• Migrating data between systems that use different data formats.
• Debugging data interchange issues by viewing the same data in both formats.

Technical Details

For JSON-to-XML conversion, the tool recursively traverses the JSON structure: objects become XML elements with child elements for each key, arrays produce repeated sibling elements with the same tag name, and primitive values (strings, numbers, booleans, null) become text content. For XML-to-JSON conversion, the tool parses XML using the browser's DOMParser, then walks the element tree to build a JSON object. XML attributes are placed under a special @attributes key, text content is extracted, and child elements become nested objects or arrays (when siblings share the same tag name). Note that JSON-to-XML-to-JSON round trips may not be perfectly lossless due to fundamental differences between the two formats (e.g., XML has attributes and mixed content, while JSON has typed values). For validating XML syntax, see our XML Validator.

Conclusion

The JSON / XML Converter is an essential integration tool that bridges the gap between the two most popular data interchange formats. With bidirectional conversion, nested structure support, and complete browser-based privacy, it simplifies data transformation for any development or migration project.