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 ODS
Turn your XLSX files into ODS in seconds. Everything happens in your browser: nothing is uploaded to any server.
XLSXODS
Drag your files here
Or paste them with Ctrl+V. They never leave your device.
Why convert XLSX to ODS?
Other apps and databases usually ask for CSV to import data. As ODS it opens in LibreOffice and meets open-format requirements.
About the formats
ODS, the open spreadsheet
ODS is the open standard spreadsheet format of LibreOffice and OpenOffice.
Strengths: It does not depend on any vendor and many public bodies require it.
Limits: Outside LibreOffice not everyone opens it comfortably.
How to convert XLSX to ODS
- 1Drop your XLSX files in the box, paste them or pick them from your device.
- 2Check that the target is ODS and open the options if you want to adjust it.
- 3Press “Convert” and download each ODS, or all of them in a ZIP.
Frequently asked questions
Is my XLSX uploaded to a server to turn it into ODS?
No. The XLSX to ODS 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 ODS or all of them in a ZIP.