FileTranslator › XLSX to JSON
Convert XLSX to JSON
When a spreadsheet is the source of truth — product lists, translations, configuration — developers end up converting it to JSON over and over.
Drop XLSX files here
or
Output is pre-set to JSON — you can change it per file after adding.
About XLSX to JSON conversion
This tool reads the first sheet, uses row one as keys, and emits a pretty-printed JSON array in one step, with no CSV detour and no data leaving your machine.
How to convert XLSX to JSON
- Drop your XLSX files onto the box above, or click Choose files.
- The output format is already set to JSON — adjust it per file if you need something else.
- Click Convert, then download your JSON files (or everything as one ZIP).
Free, no account, no watermarks — and because the conversion runs in your browser, your files are never uploaded to a server.
XLSX to JSON — frequently asked questions
How do I convert XLSX to JSON?
Drop your XLSX file onto the converter above (or click Choose files), make sure the output format is set to JSON — it is preselected on this page — then click Convert and download the result.
Is this XLSX to JSON converter free?
Yes. Converting XLSX to JSON on FileTranslator is completely free, with no account, no file limit and no watermarks. The site is supported by ads instead of fees.
Are my XLSX files uploaded to a server?
No. The conversion from XLSX to JSON runs entirely in your browser using WebAssembly and JavaScript — your files never leave your device, which makes it safe for private documents and photos.