Convert XLSX to ODS online, for free.
By proceeding, you confirm you own the rights to the files you upload and agree to our Terms of Use.
Simply upload your XLSX files and click the convert button. You can also batch convert XLSX to ODS format.
We use both open source and custom software to make sure our conversions are of the highest quality. In most cases, you can fine-tune conversion parameters using “Advanced Settings” (optional, look for the icon).
Our XLSX to ODS Converter is free and works on any web browser. We guarantee file security and privacy. Files are protected with 256-bit SSL encryption and automatically deleted after 8 hours.
Excel Open XML Workbook (XLSX) is the default spreadsheet format of Microsoft Excel since the 2007 release. An XLSX file is a ZIP package of Office Open XML parts describing worksheets, formulas, charts, and formatting. Compared with the old XLS format it is substantially smaller, supports over a million rows per sheet, and cannot contain macros — a deliberate safety measure.
Microsoft Excel opens XLSX natively, and Excel for the web opens it in a browser with a Microsoft account.
Google Sheets, LibreOffice Calc, and Apple Numbers all preserve formulas and most formatting. Very complex workbooks with pivot tables or advanced charts are safest in Excel itself. To share data without letting recipients change it, convert the workbook with our XLSX to PDF tool.
Developed by: Microsoft
Standard: ECMA-376 / ISO/IEC 29500
Initial Release: 2007
OpenDocument Spreadsheet (ODS) is the spreadsheet format of the OpenDocument standard and the default in LibreOffice Calc and Apache OpenOffice Calc. An ODS is a ZIP package of XML describing the cells, formulas, charts, and formatting. Because the specification is published as ISO/IEC 26300 and belongs to no single company, ODS is favoured by governments and public bodies that need data to remain accessible in the long term.
LibreOffice Calc is the reference application for ODS, since it implements the standard in full.
You are not limited to it: Microsoft Excel has opened and saved ODS since 2009, Google Sheets imports it, and Apple Numbers can too. Some advanced formulas and chart types do not translate perfectly between suites, so check calculated totals after converting. Our ODS to XLSX tool handles conversion.
Developed by: OASIS
Standard: ISO/IEC 26300
Initial Release: 2005
Freeconvert.me can convert your other files to ODS format:
Freeconvert.me can convert your XLSX files to these other formats:
At FreeConvert, we go beyond just converting files—we protect them. Our robust security framework ensures that your data is always safe, whether you're converting an image, video, or document. With advanced encryption, secure data centers, and vigilant monitoring, we've covered every aspect of your data's safety.
Learn more about our commitment to security