JSON to XML and XML to JSON Converter

Convert JSON to XML or XML to JSON instantly with this free online converter that runs 100% in your browser. Pick a direction, paste your JSON or XML into the input box, and get clean, pretty-printed output you can copy in one click. Paste JSON and it builds well-formatted XML with the XMLBuilder; paste XML and it validates and parses it into structured, indented JSON. Because all conversion happens locally, your data is never uploaded and never leaves your device. Perfect for developers transforming API payloads, config files, and data feeds between the two formats.

🔒 100% private — files never leave your device

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How to use

  1. Choose a direction: JSON to XML or XML to JSON.
  2. Paste your JSON or XML into the input box.
  3. Click Convert to generate the formatted output — it also updates as you type.
  4. Copy the converted result with the Copy button.

Frequently asked questions

Is my data uploaded anywhere?

No. The conversion runs entirely in your browser using JavaScript, so your JSON and XML are processed locally and never leave your device or get sent to any server.

Can it convert in both directions?

Yes. Use the direction selector at the top to switch between JSON to XML and XML to JSON. The input placeholder updates to match the mode you pick.

Why do I get an 'invalid input' error?

The input could not be parsed. For JSON to XML your JSON must be valid, and for XML to JSON your XML must be well-formed. Check for missing quotes, commas, or unclosed tags, then convert again.

Does it preserve XML attributes?

Yes. Attributes are kept in both directions — XML attributes become keys prefixed with @_ in the JSON output, and those keys are written back out as attributes when you convert JSON to XML.

Is the output formatted and readable?

Yes. JSON to XML produces indented, pretty-printed XML, and XML to JSON returns JSON indented with 2 spaces, so the result is easy to read and paste into your project.

Is there a size limit on the data I can convert?

There is no fixed limit. Since everything runs in your browser, very large documents are only bounded by your device's available memory, so most JSON and XML files convert instantly.

About this tool

Free online JSON to XML and XML to JSON converter that runs 100% in your browser. Paste your data, convert in either direction, and copy well-formatted output — nothing uploaded.

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