Opening XLSM files
Did your computer fail to open a XLSM file? We explain what XLSM files are and recommend software that we know can open or convert your XLSM files.
What is a XLSM file?
Files that contain the .xlsm file extension are files that contain macro-enabled spreadsheet files that have been created with the Microsoft Excel spreadsheet application.
XLSM worksheets contain cells that are arranged in columns and rows. The spreadsheets with the .xlsm file extension also use embedded macros that have been programmed into the worksheet contained in the file.
The XLSM file format can only be used with the 2007 and later versions of Microsoft Excel. These versions of Excel use the Open XML format, which allows the creation of the XLSM files. Previous versions of Excel were unable to create XLSM macro-enabled worksheets.
Software that will open, convert or fix XLSM files
Try a universal file viewer
In addition to the products listed above, I would suggest that you try a universal file viewer like Free File Viewer. It can open over 200 different types of files - and very likely yours too! Download Free File Viewer.