XLS is Microsoft's proprietary binary spreadsheet format from the Excel 97-2003 era. ODS (OpenDocument Spreadsheet) is an ISO-standardized open format used natively by LibreOffice Calc, Apache OpenOffice, and Google Sheets. Converting XLS to ODS migrates spreadsheet data from a closed, proprietary binary container to an open, XML-based format that is guaranteed to be readable by any compliant application without licensing restrictions.

Many government agencies and educational institutions require documents in ODS format as part of open standards mandates. The European Commission, for example, requires ODF-compliant formats for document interchange. If you have XLS files that must be submitted to or shared with organizations following open document policies, converting to ODS is mandatory.

LibreOffice and OpenOffice users who receive XLS files often experience formatting discrepancies because these applications handle the BIFF binary format through reverse-engineered parsers. Converting to ODS — the native format for these applications — eliminates parsing inconsistencies and provides the best editing experience for non-Microsoft users.

The conversion engine uses LibreOffice in headless mode to read the XLS BIFF8 binary stream and re-serialize the workbook as an ODS package. Cell values, formulas (mapped from Excel function names to ODF equivalents), number formats, cell styles, sheet names, and basic charts are preserved. The ODS output conforms to ODF 1.2, the most widely supported version of the standard.

Most standard formulas convert correctly. LibreOffice maps Excel function names to their ODF equivalents. Exotic or region-specific Excel functions may need manual adjustment.

Basic chart types (bar, line, pie, scatter) convert well. Complex Excel chart features like trendlines with custom equations or combination charts may need manual recreation.

Yes, Excel 2007 and later can open ODS files, though some ODF-specific features may not render perfectly. The conversion is primarily for users working in LibreOffice or open-format environments.

ODS files are typically similar in size to XLS files. Both use compression (ODS via ZIP, XLS via BIFF compound document storage), so size differences are usually minimal.

Excel VBA macros do not convert to ODS. LibreOffice uses its own macro language (LibreOffice Basic). Macros must be manually rewritten if needed in the ODS environment.

Device	XLS	ODS
Windows PC	Partial	Partial
macOS	Partial	Partial
iPhone/iPad	Partial	Partial
Android	Partial	Partial
Linux	Partial	Partial
Web Browser	No	No

الميزة	XLS	ODS
الاسم الكامل	Microsoft Excel 97-2003	OpenDocument Spreadsheet
الامتداد	.xls	.ods
الأفضل لـ	Legacy support	Open standard

Convert XLS to ODS — Free Online Converter

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XLS مقابل ODS

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