What is an .xlsx file? Before we go into detail explaining how to edit .xlsx files on a Mac, iPhone or iPad, let’s first discuss what an .xlsx file is.

In addition, .xlsx is a compressed file format, meaning the .xls format creates larger file sizes for every sheet.

How to Open an XLS File in Excel. XLS files are Excel workbook files created in Excel 97 or Excel 2003. The 2007, 2010 and 2013 versions of the program use the XLSX format by default to save ...

Use these free online tools and software to convert VCF to CSV or Excel (XLS, XLSX) file format on your Windows 11/10 PC.

LibreOffice 25.8.1 brings almost 100 bug, crash and other regression fixes. This is the first of several planned point ...

If you cannot open an Excel file and see Excel cannot open the file because the file format or extension is not valid error, see this post.

Click "Files" to launch the Open dialog box. Navigate to and select your XLSX file, then click the "Open" button to upload it to your Google Drive space.