How can I open file extension .xls?
The XLS file extension is associated with Microsoft's spreadsheet
program, Microsoft Excel. The initials XLS stand for eXceL Spreadsheet.
Microsoft Excel has a long history dating back to the mid-1980s when it was
developed to compete with Lotus 1-2-3. Since its debut, it has gone through
many incarnations. While file extension XLS remains in use, newer versions
of Excel, notably Excel 2007 and 2010, default to a new file extension, XLSX.
Microsoft Excel spreadsheets are capable of storing huge amounts of data in rows and columns. Each portion of the grid is called a cell, and cells can interact with each other. For example, you can set up the spreadsheet to perform complex calculations based on the values entered into individual cells. A single XLS file can contain a spreadsheet with multiple pages as well. In addition XLS files can include embedded links to other spreadsheets, objects, charts, trend analysis tools, and much more.
The XLS file extension stores all of this information into "streams" within the file. In addition to storing the user's created spreadsheet data, XLS files also store metadata detailing more information about the spreadsheet such as who created it, when it was created, when it was modified, its size, the number of pages, and more. This metadata is stored in the XLS file in the file's "properties" section.
File extension XLS has several MIME types associations: