Convert JSON to XML in Seconds

JSON won the modern web a long time ago — it's what REST APIs return, what JavaScript reads natively, and what most new tooling assumes by default. XML never fully went away, though, because a large amount of enterprise software, banking infrastructure, government systems, and SOAP-based web services were built on it years before JSON existed, and rewriting that infrastructure isn't something most organizations do just because a newer format became popular.

Converting JSON to XML matters specifically at that boundary — the point where data produced by a modern JSON-speaking system needs to reach something that was never taught to understand JSON. A SOAP endpoint expects an XML envelope. A legacy ERP or EDI integration expects XML documents in a specific shape. A document management system built fifteen years ago validates incoming data against an XSD schema that has no JSON equivalent. None of that changes just because the data originated as JSON somewhere upstream.

This tool handles the structural translation with one fixed, predictable rule applied everywhere: every JSON object key becomes an XML element with that name, and every element of a JSON array — regardless of how many items it has or what type they are — becomes an <item> element nested inside its array's own element. That consistency matters for legacy integrations, since a converter that changes its array behavior based on content would produce a different XML shape for the same field depending on what happened to be in it that day, which is exactly the kind of inconsistency a schema-validating system rejects.

The array rule is deliberately the same in every situation: given {"tags": ["a", "b"]}, the output is a <tags> element containing two <item> children, one per array element — not two separate <tags> elements, and not a comma-joined string. This holds regardless of what the array contains: an array of plain strings, an array of numbers, an array of objects, or an array of nested arrays are all wrapped the same way, with each element individually re-wrapped as its own <item>.

That single rule extends recursively — an array element that's itself an array becomes an containing more children, and an array element that's an object becomes an containing that object's own key-based elements. Nothing about the mapping changes based on array length, depth, or the mix of types inside it, so the same JSON structure always produces the exact same XML shape no matter what data happens to be in it.