XLSX, the Excel workbook
XLSX is the Microsoft Excel format: a workbook with one or more sheets, data types and formatting.
Strengths: It is what almost any office expects.
Limits: Other apps and databases usually ask for CSV to import data.
Data
Convert XLSX to JSON
Turn your XLSX files into JSON in seconds. Everything happens in your browser: nothing is uploaded to any server.
XLSXJSON
Drag your files here
Or paste them with Ctrl+V. They never leave your device.
Why convert XLSX to JSON?
Other apps and databases usually ask for CSV to import data. As JSON any program or API can use it directly.
About the formats
JSON, structured data for software
JSON is the data format of APIs and web apps: nested lists and objects as text.
Strengths: Every programming language reads it and it is easy to validate.
Limits: For a person, a table in JSON is harder to read than a spreadsheet.
How to convert XLSX to JSON
- 1Drop your XLSX files in the box, paste them or pick them from your device.
- 2Check that the target is JSON and open the options if you want to adjust it.
- 3Press “Convert” and download each JSON, or all of them in a ZIP.
Frequently asked questions
Is my XLSX uploaded to a server to turn it into JSON?
No. The XLSX to JSON conversion runs entirely in your browser, with code downloaded from this site and executed on your device. You can check it in the Network tab of the developer tools or by going offline after the page loads.
Is there a size limit?
Up to 1 GB on desktop and about 200 MB on mobile, although a huge spreadsheet may take a few seconds.
Can I convert several XLSX files at once?
Yes. Drop as many XLSX files as you like: several are converted at the same time, depending on your processor cores, and when they finish you can download each JSON or all of them in a ZIP.