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.XLS File Extension

File TypeExcel Spreadsheet

3.9 (595 Votes)
CategorySpreadsheet Files

What is an XLS file?

An XLS file is a spreadsheet file created by Microsoft Excel or exported by another spreadsheet program, such as OpenOffice Calc or Apple Numbers. It contains one or more worksheets, which store and display data in a table format. XLS files may also store mathematical functions, charts, styles, and formatting.

More Information

Screenshot of a .xls file in Microsoft Excel 2019

XLS file open in Microsoft Excel 2019

A spreadsheet is used for organizing, analyzing, manipulating, and visualizing data. It consists of a table with rows and columns. The table cells may contain manually entered data or the results computed from the data of other cells.

Excel is the most widely used spreadsheet application in the world. It comes with every edition of the Microsoft Office suite and is used in home, academic, and business environments. If you work in an office environment, there is a good chance you have seen and opened an XLS file.

NOTE: XLS files are saved in the Excel Binary File Format, which was the primary format until the Office Open XML format was introduced with Excel 2007. Most Excel files are now saved in the Office Open XML format, with an .XLSX file extension. However, Microsoft Excel and many other spreadsheet programs still support the older XLS format.

Common XLS Filenames

Workbook1.xls - The default filename Microsoft Excel gives to new spreadsheets prior to Excel 2007, which creates new spreadsheets with the Workbook1.xlsx filename.

Open and view .XLS files with File Viewer Plus.
Programs that open XLS files
Updated 8/2/2019

About XLS Files

Our goal is to help you understand what a file with a *.xls suffix is and how to open it.

The Excel Spreadsheet file type, file format description, and Mac, Windows, Linux, Android, and iOS programs listed on this page have been individually researched and verified by the FileInfo team. We strive for 100% accuracy and only publish information about file formats that we have tested and validated.

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