It will depend on the application you are using and the version. Up to Excel 2003 .xls was used but for versions since 2007 .xlsx is used. Other spreadsheet programs use different extensions. Works uses .wks as its extension, Open Office has used .sxc and Star Office has .sdc, Quattro has .wb2 and Lotus 123 has .123 as its extension. There are many others.
.odt
Using UBC-DOS based program it is easy. Calc files are generated there. When you are working in the windows version of UBCWM these calc files are also generated. In fact each Run generates a file having an extension of .BDC. Open UBCWM, go to "tools" then "Input data conversion utilities" From there browse to your required folder in which the .BDC file is located, select the required file and then click OK and finally "Convert now". This procedure will convert that particular .BDC file to .ADC file which is your calc file.
What is the file extension What is the file extension
file extension for video is 101
.html, .php, or .htm
The file extension tells about the type of file, with the extension three letters. For Eg:- *.txt -- text file *.exe-- executable file
file extension
The file extension is ".pages"
the extension of a batch file is ".bat"
The file extension of iPhone firmware file is .ipsw .
The extension .jpeg tells us the file is an image file
The main project file has a VBPROJ extension. This is also a file with the same name as the main project file, but with an SLN extension. The SLN extension is a solution file.
* The file extension of a Word document is .doc * The file extension of an Excel speadsheet is .xls