File extension xls

File extension xls is one of the file extensions that define type of the file and its contents.

The .xls file extension format is used by Microsoft Excel, in creating a worksheet. Microsoft Excel is arguably the highest-used spreadsheet program all over the world. These files are the spreadsheets which include workbooks, worksheets and cells. The data is entered into the tabular cells and these files are most commonly-used to create graphs, charts and numerical sheet representations. The extension .xls is used by Microsoft Excel Version 97-2003 only. The later version of MS Excel, i.e. 2007 uses the .xlsx extension for its spreadsheet files.

So, where are all .xls files used?

File extension xls technically stands for Excel Spreadsheet. Excel uses a primary format to save all its files in the manner. This format is called the Binary Interchange File Format (BIFF). Microsoft Excel is the best program to open the files with the .xls extensions. However, they can also be opened with Open Office. There are different format extensions in which the XLS files are available. They are application/ (officially used by Microsoft Excel), application/msexcel, application/x-msexcel, application/x-ms-excel, application/, application/x-excel, application/x-dos_ms_excel and application/xls.

What is an Excel sheet?

Well, most of us already know what an excel sheet is. Yet, for the purpose of defining, an Excel spreadsheet is a tabular division of rows and columns which are further divided into the smallest units called cells. The text is entered in these cells. Such spreadsheets are of great use for the representation of tabular data and numerical figures. These files are generally used by the business and corporate classes for the tabular and diagrammatical representation of data through charts and tables. The files with the . File extension xls are very easy to open and access. By simply double-clicking the file icon, it will automatically get opened with Microsoft Excel, or any other spreadsheet viewer for that matter, according to the system's programs.

So, what more can File extension xls files do?

In addition to this, these files are not too large. This is why a handsome amount of data can be transferred through the .xls extension files via emails or through Microsoft Outlook. The .xls files are also a very safe way of transferring data as Microsoft Excel also gives an option to secure these files by adding password protection to open or modify a document, protect a workbook and to protect the sharing of the workbooks.

Confused about File extension xls? Want to learn more about what file extensions are, how Windows and computers work? You can start by reading our knowledge base articles about these topics in our knowledge base which is regularly updated with new content.

Files on computers are grouped together into folders. Folders can contain files or other folders within them. Folders help keeps your computer files organized. Learn more about files and folders.

Files can contain different kinds of information – text documents, spreadsheets with numbers, pictures, videos, music, maps, etc… In order to tell which file contains which data, file extensions are used. File extension is a part of a file name that comes after the last dot. Examples of file extensions are JPEG, DOC, MP3, MP4, etc. A rough analogy would be person’s last name. Just like it, file extension identifies which “family” of files, specific file belongs to. Learn more about file extensions.

From computer’s point of view all files contain just long strings of numbers. It is computer applications (aka software) is what translates these numbers into useful, text images, and sounds. In order to open the file correctly, computer must use correct application that is appropriate for a file type (Word processor for text documents, photo application for image files, etc). Each file extension is assigned main default application that opens it and a number or additional applications that user can choose from. Information about these assignments is stored in Windows Registry. Failure to open files often results from Windows registry being corrupted. Learn more about Windows Registry.

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