We have found 8 software records in our database eligible for .xlsm to .xls file format conversion.
The Excel Open XML macro-enabled workbook files (.xlsm) can be exported to standard Microsoft Excel workbook (.xls) file format directly in Microsoft Excel, but if you do this conversion, you will lose macros saved in the Excel macro-enabled workbook.
It is possible that xlsm to xls conversion can be also done in other spreadsheet programs that support Excel formats.
XLSM
Files with xlsm extension are used for workbooks of spreadsheets created in Microsoft Excel that also include macros, that enhance the functionality of the spreadsheet but some automation features. Other spreadsheets might open xlsm files as well, however they most likely wont be able to use the Excel specific formatting and macros.
XLS
Files with xls extension are best known as spreadsheets from Microsoft Excel. A spreadsheet is basically a grid of cells sorted in rows and columns. Each cell can contain text, numeric or formula data. Excel XLS spreadsheets can be opened in most other similar programs, such as OpenOffice.org Calc.