JSON ↔ XML Converter bidirectionally converts between JSON and XML formats. Convert API responses to XML for legacy system integration, or transform XML configuration files to JSON for modern APIs. The tool preserves nesting, arrays, and data types while mapping between JSON's key-value model and XML's element/attribute structure.
How it Works
1Paste your JSON or XML into the input panel.
2Select the conversion direction: JSON → XML or XML → JSON.
3The converter maps the data structure to the target format.
4Copy or download the converted output.
Frequently Asked Questions
How are JSON arrays converted to XML?
JSON arrays are converted to repeated XML elements with the same tag name. For example, the JSON array 'items: [1, 2, 3]' becomes three <item>1</item><item>2</item><item>3</item> elements inside an <items> parent. The array wrapper element uses the plural key name; each item uses a singularised version (or 'item' by default).
How are XML attributes handled when converting to JSON?
XML attributes are converted to JSON keys with a special prefix (typically @ or _attr_) to distinguish them from child elements. For example, <tag id='1'>value</tag> might become {"tag": {"@id": "1", "#text": "value"}}. The exact convention depends on the converter configuration.
Are there data types that don't map cleanly between JSON and XML?
Yes. JSON has native boolean (true/false) and null values; XML has no equivalent and represents them as strings. JSON numbers are typed; XML values are always strings. In the JSON→XML direction, type information is lost. In the XML→JSON direction, all string values are strings unless the tool applies type inference.
Can I convert large XML/JSON documents?
Yes, within browser memory limits. Documents up to a few MB convert quickly. Multi-MB XML documents with deep nesting may take a second or two but complete successfully. For bulk conversion of very large files, a server-side script with fast-xml-parser (Node.js) or lxml (Python) is more appropriate.