The difference is: 1. The corresponding versions are different. The ".xls" file corresponds to "Office EXCEL 2003" and previous versions, and the ".xlsx" file corresponds to 2007 and later versions; 2. ". xlsx" files take up less space than ".xls" files and the computing speed will be faster.
The differences between the two are as follows:
1. Differences in corresponding software versions# The
##.xls file extension corresponds to Microsoft Office EXCEL 2003 and previous versions. The .xlsx file extension corresponds to Microsoft Office EXCEL 2007 and later versions.
2. The difference in core structure:
.xls file is a unique binary format, and its core structure is The structure of the compound document type. The core structure of the .xlsx file is an XML type structure, which uses an XML-based compression method to make it take up less space.3. Differences in software compatibility between the two
.xls file can be opened with Office EXCEL 2003 version, or with Office EXCEL 2007 and later versions Open. .xlsx files can only be opened with Office EXCEL 2007 and later versions. Office EXCEL 2003 version cannot use files in .xlsx format. If you want to use Office EXCEL 2003 version to open .xlsx files, you can install the Office compatibility patch pack. By applying the compatibility patch pack, Office EXCEL 2003 users can open, edit, and save documents in .xlsx format. This compatibility patch can also be used with Office Word Viewer 2003, Excel Viewer 2003 and PowerPoint Viewer 2003 to view files saved in the new format. Recommended tutorial: "excel tutorial"
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