XLSM Converter
DevConverter is an online document and spreadsheet converter. Amongst many others, we support PDF, XLSX, XLS, CSV, ODS. Thanks to our advanced conversion technology the quality of the output will be exactly the same as if the file was saved through the latest Microsoft Office 2019 suite.
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XLSM
The 'M' of XLSM stands for macro. Macros are programs embedded in Office documents used to automate different tasks. Staring from Excel 2007, XLSX spreadsheets that contain macros are saved with the XLSM extension.