Excel 2013 uses a .xlsx extension.
Excel files are usually .xls In Office 2007 Excel files that are single pages are still .xls while workbooks (more than one page) are .xlsx There are other extension for documents that are web pages in Excel, documents that have macros enabled and other such things. To find out, go to your Excel program and click "save as" When the menu comes up, click on the pull down menu "save as type" You will be able to see all the different options there.
Up to version 2003, Excel uses xls as its extension and file type. From versions 2007 onwards you can do a Save As to save to the 2003 version, which will mean it is in xls version.Up to version 2003, Excel uses xls as its extension and file type. From versions 2007 onwards you can do a Save As to save to the 2003 version, which will mean it is in xls version.Up to version 2003, Excel uses xls as its extension and file type. From versions 2007 onwards you can do a Save As to save to the 2003 version, which will mean it is in xls version.Up to version 2003, Excel uses xls as its extension and file type. From versions 2007 onwards you can do a Save As to save to the 2003 version, which will mean it is in xls version.Up to version 2003, Excel uses xls as its extension and file type. From versions 2007 onwards you can do a Save As to save to the 2003 version, which will mean it is in xls version.Up to version 2003, Excel uses xls as its extension and file type. From versions 2007 onwards you can do a Save As to save to the 2003 version, which will mean it is in xls version.Up to version 2003, Excel uses xls as its extension and file type. From versions 2007 onwards you can do a Save As to save to the 2003 version, which will mean it is in xls version.Up to version 2003, Excel uses xls as its extension and file type. From versions 2007 onwards you can do a Save As to save to the 2003 version, which will mean it is in xls version.Up to version 2003, Excel uses xls as its extension and file type. From versions 2007 onwards you can do a Save As to save to the 2003 version, which will mean it is in xls version.Up to version 2003, Excel uses xls as its extension and file type. From versions 2007 onwards you can do a Save As to save to the 2003 version, which will mean it is in xls version.Up to version 2003, Excel uses xls as its extension and file type. From versions 2007 onwards you can do a Save As to save to the 2003 version, which will mean it is in xls version.
Excel 2007 creates xlsx files, and earlier versions of Excel create xls files. The earlier versions won't be able to open the 2007 files. So you need Excel 2007 to open them or get a converter or try and open them in Google docs. If you get them open, then save them in your version of Excel so that they can be opened in future, using the Save As option on the File menu.
XLS is the file extension for MS Excel 2003 and earlier. If you want to save something in XLS format, then put the scenario data in Excel and save in Excel 2003 format.
It depends. There is no direct relationship between Windows and Excel versions. If you have Windows XP, you probably use Excel 2003. If you have Windows 7, you probably use Excel 2007 or Excel 2010. Excel 2007 and later can read Excel 2003 files, but Excel 2003 cannot read Excel 2007 files, unless you save the files in "compatibility mode." Excel 2007 and later contain some features not available with Excel 2003 and earlier. If you need to use the same worksheets with several versions, then save your files in compatibility mode with the newer versions.
Extension names allow your computer to recognize which program is needed to open the file.
XLS is the file extension for MS Excel 2003 and earlier. If you want to save something in XLS format, then put the scenario data in Excel and save in Excel 2003 format.
Excel provides formats that allow you to save files on a PC to be used on a Mac or on a Mac to be used on a PC, so the answer is yes.
Save your file as Excel xls format. Use the File-->Save As... menu and select the file type in the save dialog. For a video How to, see related links.
The differences between them are not extensive so you can work in Excel 2010 easily if you are familiar with Excel 2007. You can save your files so that Excel 2007 will recognise them.
File extensions for web pages usually are .html.
The default file ext for Excel 2010 default install is .xlsx as it was in 2007. 2003 was the last version with a different extension, which was .xls for workbooks.Te default file ext may be changed by going into File-> Options -> Save -> Save in this format.If there is a group policy in place, Excel will inherit the default file extension specified.