JSON to XML Converter : Free Online Tool, Instant Results

Why Convert JSON to XML?

JSON and XML are both widely used formats for storing and exchanging structured data. While JSON has largely taken over in modern web APIs, XML remains the standard in many enterprise environments, legacy systems, and industry-specific protocols.

You might need to convert JSON to XML when:

How JSON Maps to XML

Understanding how JSON structures translate to XML helps you predict and verify the output before using it in a live system.

Here is a practical example showing a product object with a nested array:

Notice how the tags array becomes a parent <tags> element with individual <tag> children because XML has no native array syntax, the converter creates repeating elements to represent each item.

How to Use This JSON to XML Converter

Using this tool takes just a few seconds — no login or installation required.

1. Paste your JSON data into the input area above.
2. Click Convert to XML.
3. Review the XML output. The tool validates your JSON before converting and flags any syntax errors with the line number.
4. Adjust conversion options if needed — root element name, array handling, or whether to include the XML declaration.
5. Click Copy to copy the XML to your clipboard, or download it as a file.

Best Practices for JSON to XML Conversion

Following these guidelines before and after conversion prevents the most common errors when working with converted XML in a real system.

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  Validate your JSON before converting. Any syntax error in the JSON input will produce invalid XML output or an outright error. Always validate JSON first using the JSON Formatter before running a conversion.
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  Use simple, lowercase key names in your JSON. JSON keys become XML tag names. XML tag names cannot start with a number, cannot contain spaces, and are case-sensitive. Keys like firstName convert cleanly; keys like first name or 2ndItem require sanitization that may alter the output.
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  Decide on array handling before converting. Arrays can be converted to repeating child elements or wrapped in a parent container both are valid, but the target system may require one specific approach. Check the documentation for the SOAP API or enterprise system you are integrating with.
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  Include the XML declaration for system integrations. The <?xml version="1.0" encoding="UTF-8"?> declaration tells the receiving system the XML version and character encoding. Most enterprise systems and SOAP APIs require it.
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  Test the XML output against the target system's schema. If the receiving system uses an XSD (XML Schema Definition) for validation, test your converted XML against it before deploying. A schema mismatch will cause silent failures in many enterprise integrations.
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  Escape special characters in string values. Characters like <, >, &, and " have special meaning in XML. This converter handles escaping automatically, but if you manually edit the XML afterward, always escape these characters correctly.

Common JSON to XML Conversion Errors

These are the most frequent problems that occur during JSON to XML conversion and how to resolve each one.

JSON vs XML When to Use Each

Both formats represent the same structured data the key differences are in syntax, native capabilities, and where each is typically used in real systems.

Use JSON for modern REST APIs, web applications, and mobile apps. Use XML when required by a specific system, industry standard, or legacy integration or when you need XSLT transformations or XSD schema validation.