Is Konnect2Tools free?

Yes. These in-browser tools are completely free to use with no account required for core functionality.

Do my files leave my device?

Browser document operations run locally, except where the operation uses an external service, such as AI summarisation. Read the processing note before using sensitive inputs.

Is the JSON ↔ XML converter tool safe to use?

Local operations process document content on your device. External-service operations may send inputs as described in the processing note. Keep originals and inspect the output.

Can I convert any JSON to valid XML?

Most JSON structures convert cleanly to XML. However, JSON arrays of mixed types (mixing objects and primitives), and JSON keys that contain characters invalid in XML element names (spaces, special characters) require pre-processing before conversion.

How are JSON arrays represented in the XML output?

By default, JSON arrays are converted to repeated XML elements with the same tag name. The specific tag name used for array elements can be configured — often the singular form of the array's key name.

What happens with JSON null values during XML conversion?

JSON null values can be represented in XML as empty elements (self-closing tags) or as elements with a xsi:nil='true' attribute. The representation depends on the conversion mode selected.

How are XML attributes handled when converting XML to JSON?

XML attributes are typically converted to '@attribute_name' prefixed keys in the resulting JSON object, distinguishing them from child elements which become regular key-value pairs.

Developer & data utilities

JSON ↔ XML converter

Convert JSON objects to XML and simple XML to JSON.

Run JSON ↔ XML converter online

In-browserDocument processing runs on your device. External resources may still load.

Enable JavaScript to use the interactive tool. Read the instructions, limitations and FAQs below before starting.

JSON and XML are both widely used data exchange formats, but different systems, APIs, and legacy applications prefer one over the other. Converting between them is a common integration task when connecting modern web applications (which favour JSON) with enterprise systems, SOAP web services, and legacy applications (which often use XML).

JSON-to-XML conversion maps JSON objects to XML elements, arrays to repeated elements, and values to element text content or attributes. The resulting XML follows a consistent structural mapping that can be customised with namespace prefixes and attribute vs. element representation preferences. XML-to-JSON conversion maps XML elements and attributes into the equivalent JSON structures.

Integration developers converting REST API responses for legacy enterprise systems, data engineers transforming ETL pipeline formats, and developers building connectors between modern microservices and older XML-based services all use JSON↔XML conversion regularly.

How to use this utility

Use the controls below—paste text, pick files, or adjust options as described on the tool.
Click the main action button. Processing runs in your browser on this device.
Download or copy the output. Check the processing note for any external services used by this operation.

Common use cases

Converting a REST API JSON response to XML for a legacy enterprise integration layer.
Transforming a SOAP XML service response to JSON for a modern web application.
Converting a JSON configuration file to XML for an XML-based application configuration system.
Parsing XML feed data (RSS, Atom, SOAP) into JSON for processing in a JavaScript application.
Converting a JSON data export to XML for import into a legacy ERP or CRM system.

Tips for best results

1JSON arrays convert to repeated XML elements — verify the element name convention is correct for your target XML schema (singular vs. plural element names).
2XML has a root element requirement; JSON objects don't — the conversion adds a default root element if the JSON doesn't have one. Customise the root element name in the options.
3XML attributes can be represented in JSON as '@'-prefixed keys (e.g., '@id') or as nested objects — choose the convention that matches your target system.
4For XML with namespaces, the conversion will include namespace attributes (xmlns:...) in the JSON output — handle these explicitly in your application code.
5Validate the output XML against the target schema (XSD) if one exists, to catch any structural mismatches from the automatic conversion.

Frequently asked questions

Is Konnect2Tools free?: Yes. These in-browser tools are completely free to use with no account required for core functionality.
Do my files leave my device?: Browser document operations run locally, except where the operation uses an external service, such as AI summarisation. Read the processing note before using sensitive inputs.
Is the JSON ↔ XML converter tool safe to use?: Local operations process document content on your device. External-service operations may send inputs as described in the processing note. Keep originals and inspect the output.
Can I convert any JSON to valid XML?: Most JSON structures convert cleanly to XML. However, JSON arrays of mixed types (mixing objects and primitives), and JSON keys that contain characters invalid in XML element names (spaces, special characters) require pre-processing before conversion.
How are JSON arrays represented in the XML output?: By default, JSON arrays are converted to repeated XML elements with the same tag name. The specific tag name used for array elements can be configured — often the singular form of the array's key name.
What happens with JSON null values during XML conversion?: JSON null values can be represented in XML as empty elements (self-closing tags) or as elements with a xsi:nil='true' attribute. The representation depends on the conversion mode selected.
How are XML attributes handled when converting XML to JSON?: XML attributes are typically converted to '@attribute_name' prefixed keys in the resulting JSON object, distinguishing them from child elements which become regular key-value pairs.

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