Conversion of xlsx files to xlsm file format

Considering both .xlsx and .xlsm files come from Microsoft Excel, you can pretty much resave one to another using the default save function in Excel. What this xlsx to xlsm conversion does is that it enables macros in the spreadsheet document. It is likely that the very same can be achieved with any 3rd party spreadsheet software, provided it supports MS Excel formats.

Open XLSX file    Open XLSM file

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