LibreOffice uses the Open Document Format (ODF) as its primary supported file format. ODF is a fully open and ISO standardized file format that gives you the guarantee of never losing access to your data.
One of the primary benefits of ODF files is that both open-source or proprietary software can easily implement their support for these file formats without the need for complicated licensing. When it comes to LibreOffice’s CalC Spreadsheet, it’s compatible with a wide range of document formats, even including the Microsoft Excel (.xls, .xlsx)
This tutorial shows the complete list of file formats that are supported by the LibreOffice CalC spreadsheet application.
|ODF Spreadsheet Template||.OTS|
|Flat XML ODF Spreadsheet||.FODS|
|Unified Office Format Spreadsheet||.UOS|
|Microsoft Excel 2007-2013 XML||.XISX|
|Microsoft Excel 2003 XML||.XML|
|Microsoft Excel 97-2003||.XLS|
|Microsoft Excel 97-2003 template||.XLT|
|Data Interchange format||.DIF|
|HTML Document (Calc)||.HTML|
|Office Open XML Spreadsheet||.XISX|
|Microsoft Excel 2007-2016 XML (Macroenabled)||.XLSM|