Having problems opening a XLS file?

We have programs that can open or convert your XLS files.

Opening XLS files

Did your computer fail to open a XLS file? We explain what XLS files are and recommend software that we know can open or convert your XLS files.

What is a XLS file?

The .xls extension is given to spreadsheets that have been created in versions of Microsoft Excel that were published prior to the 2007 edition of the product. Microsoft Excel 2007 and later versions now use the .xlsx format rather than the .xls extension. This is due to the fact that the newer Excel software utilizes xml formatting for increased program and file efficiency.

Microsoft Excel is included in the Microsoft Office suite, although it can also be purchased individually. Excel is the application that is most commonly used to create spreadsheet documents, so most of the spreadsheets created today have the .xls or .xlsx file extension.

Try a universal file viewer

Try a universal file viewer like Free File Viewer. It can open over 200 different types of files - and most likely yours too. Download Free File Viewer here.

About File Extension XLS

File.org aims to be the go-to resource for file type- and related software information. We spend countless hours researching various file formats and software that can open, convert, create or otherwise work with those files.

If you have additional information about the XLS file format or software that uses files with the XLS suffix, please do get in touch - we would love hearing from you.