How to Open an XLSM File. An XLSM file is a spreadsheet that contains macros written in the Visual Basic for Applications, or VBA, language. Macros enable you to automate repetitive tasks and save ...

Find an Excel document on your desktop. Excel documents may use the extension .xls, .xlsx or .xlsm for workbooks, or .xlt, xltx or .xltm for templates. If you don't see file extensions on your ...