JSON to XML Converter

Transform JSON objects to well-formed XML with configurable root element and attribute handling.

Tested tool guide Tested browser tools Checked August 16, 2026

What JSON to XML Converter does and how it behaves

This converter bridges two data models rather than merely replacing punctuation. It parses a JSON object, places the converted content under the configured XML root element, and applies the selected attribute handling while forming the XML structure. The frequent surprise is that a well-formed result is not automatically valid for a particular XML vocabulary. A receiving system may demand exact element names, namespaces, child order, and attribute placement. Use its contract, schema, or accepted sample to judge the result, not successful conversion alone.

How the result is produced

Root and member mapping

The input must be valid JSON containing an object that can be represented beneath an XML document element. The root setting supplies that enclosing element's name. Within it, object members are mapped into XML structure, while the attribute-handling setting controls whether supported values are represented as attributes or child content. Check the resulting names and nesting against the XML format that will consume them.

Values without direct equivalents

JSON arrays, nulls, numbers, booleans, and strings have no single universally mandated XML encoding. The converter produces an XML representation, but well-formedness alone does not preserve JSON type information or define what repeated children mean. Attribute values are text, and attributes cannot directly contain nested objects or arrays. The receiving system therefore must agree with the chosen mapping, especially for arrays and null values.

Good uses

Reformatting a JSON request example as XML while matching a legacy endpoint's required outer element and attribute placement.
Building a small XML fixture from a hand-written JSON object for a parser test, followed by comparison with the expected XML nodes.
Exploring a JSON-to-XML mapping during a format migration, particularly whether identifiers or metadata belong in attributes or child elements.

Limits and checks

JSON permits member names such as an empty string or text containing spaces. Those strings cannot always be used directly as XML element or attribute names, so inspect whether problematic keys were renamed, escaped, or rejected.
Do not infer the original JSON scalar type solely from XML character content. Without a schema or an agreed convention, the text "false", "0", and "null" does not establish whether the source value was a string, boolean, number, or null.
Array representation is a mapping choice, not a general XML rule. Review item element names, wrappers, and order because a target format may require a different repeated-element structure even though the generated document is well-formed.

Common questions

Can I convert the XML back and recover identical JSON?

Sometimes, but not by default. XML has no built-in marker saying that text came from a JSON string, number, boolean, or null, and the element-versus-attribute choice introduces another mapping decision. JSON object member order is not significant, while XML child order can be. A later XML-to-JSON pass may produce similar data, but exact types and structure require an agreed round-trip convention.

Will the converted XML be accepted by any XML API?

Not necessarily. This tool produces well-formed XML, which addresses XML syntax. A receiver can additionally require a particular root, namespace declarations, child order, attribute placement, allowed values, and schema-defined cardinality. Configure the available root and attribute controls from the receiver's documentation, then validate the result against its XSD, DTD, or a known accepted sample when one is available.

References and verification

The behavioral notes were checked against the browser implementation. Standards and primary references below define the relevant format, formula, or platform behavior.