Plenty of systems still speak XML: legacy enterprise services, SOAP APIs, RSS and sitemap formats, configuration standards and whole industries like publishing and finance. When your data starts life as JSON, from a modern API or a JavaScript application, you need a faithful translation between the two shapes. This converter walks your JSON structure and produces equivalent XML: objects become nested elements, arrays become repeated elements with a name you choose, and scalars become element text with special characters properly escaped, so the output is well-formed and ready to feed downstream.
Quick Answer: Paste your JSON, set the root element name and the name used for array items, then click Convert. Objects become nested elements, arrays become repeated elements, and the XML appears with an optional declaration line.
How to Use the JSON to XML Converter
- Paste valid JSON into the input box; if it is messy, run it through the JSON Formatter first.
- Set the root element name that should wrap the whole document, such as root, catalog or response.
- Set the item element name used for each entry inside arrays, such as item or record.
- Click Convert to XML and review the structure in the output.
- Copy the XML into your feed, config or integration, keeping the declaration if your target system expects one.
Key Features
- Recursive conversion of nested objects and arrays to any depth.
- Custom root and array-item element names, because JSON arrays carry no element name of their own.
- Correct escaping of ampersands, angle brackets and quotes so text values cannot break the document.
- Numbers and booleans written as plain text, null values as empty elements.
- Optional XML declaration line with UTF-8 encoding for strict parsers.
Best Practices and Tips
- Choose element names your target system actually expects; XML consumers are usually far less forgiving than JSON ones.
- Validate the output in the target system with a small sample before converting a full production dataset.
- Remember JSON object keys must be valid XML names: keys starting with numbers or containing spaces need renaming first.
- If your consumer supports it, keep arrays of similar records under one parent so the XML reads like a natural document.
Common Mistakes to Avoid
- Expecting attributes: JSON has no attribute concept, so everything becomes elements; if a system requires attributes, that mapping must be designed separately.
- Using JSON keys with spaces or punctuation as element names, which produces invalid XML that strict parsers reject.
- Losing type information without noticing: XML text is untyped, so the number 42 and the string ’42’ look identical after conversion.
- Converting huge JSON files in one paste when the consumer actually wants a streamed feed; sample first, then automate.
Frequently Asked Questions
How are JSON arrays handled in XML?
An array becomes a series of sibling elements, one per entry, using the item name you set. The parent key becomes the wrapping element, so a ‘books’ array with item name ‘book’ produces a books element containing repeated book elements.
What happens to null values?
A JSON null becomes an empty element, for example a key ‘middleName’ with null produces an empty middleName element. Some systems prefer the element to be omitted entirely; if yours does, remove those keys from the JSON before converting.
Can XML attributes be generated?
Not from plain JSON, because JSON has no way to mark a value as an attribute rather than a child element. Some converters use special key prefixes for this; this tool keeps the mapping predictable by producing elements only.
Is the output guaranteed well-formed?
Yes, provided the JSON is valid and its keys are legal XML element names (letters, underscores to start; letters, digits, dashes, dots after). Values are escaped, so text content cannot accidentally break the structure.
Is my JSON uploaded for conversion?
No. The conversion runs entirely in your browser, which matters when the data is a production API response or customer extract.
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