XLSX File Type- The quick facts
What are XLSX files and how to open them
Are you having problems opening an XLSX file or just wondering what they contain? We explain what these files are used for and show you software that we know can open or otherwise handle your files.
What is an XLSX file?
An .XLSX file is a Microsoft Excel Spreadsheet in Open XML Format file. Files with the .xlsx extension are Microsoft Excel spreadsheet files that have been created using Microsoft Excel versions 2007 and later. Previous versions of Excel saved these spreadsheet documents in .xls format. The 2007 and later versions of Excel use the Office Open XML Format, creating the .xlsx extension.
The new Microsoft Excel technology combines XML formatting with document compression features, making the files more manageable to the end-user. Up until introducing the .xlsx format, .xls was the most common extension used for document spreadsheets. As the later versions of Excel become more widely used, the .xlsx format will increasingly take place.
How to open XLSX files
We have identified 3 XLSX openers for Windows that are compatible with this specific type of XLSX file.
Programs that open Microsoft Excel Spreadsheet in Open XML Format files
Last updated: January 5, 2022
Suggest another file format using extension XLSX
While we know of one file format using the .XLSX file extension, there may be more. It is widespread that different programs use files with the same file extension for very different types of data. Please let us know if you are aware of a different kind of .XLSX file.
Various apps that use files with this extension
These apps are known to open certain types of XLSX files. Remember, different programs may use XLSX files for different purposes, so you may need to try out a few of them to be able to open your specific file.