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Convert your XLSX files online. You can convert your XLSX documents from any platform (Windows, Linux, macOS). No registration needed. Just drag and drop your XLSX file on upload form, choose the desired output format and click convert button. Once conversion completed you can download your XLSM file.
You even can perform more advanced conversions. For example you can convert password protected documents. Just expand LoadOptions and enter the password of your file. Or you can add a watermark to the converted XLSM file. Expand the ConvertOptions and fill the fields for watermarking.
You can convert your XLSX documents from anywhere, from any machine or even from a mobile device. The XLSX converter is always available online and is completely free.
XLSX is well-known format for Microsoft Excel documents that was introduced by Microsoft with the release of Microsoft Office 2007. Based on structure organized according to the Open Packaging Conventions as outlined in Part 2 of the OOXML standard ECMA-376, the new format is a zip package that contains a number of XML files. The underlying structure and files can be examined by simply unzipping the .xlsx file.
Read moreFiles with XLSM extension is a type of Spreasheet files that support Macros. From application point of view, a Macro is set of instructions that are used for automating processes. A macro is used to record the steps that are performed repeatedly and facilitates performing the actions by running the macro again. Macros are programmed with Microsoft's Visual Basic for Applications (VBA) from within the Excel Workbook using the Visual Basic Editor and can be run/debug directly from there.
Read moreYou can also convert XLSX into many other file formats. Please see the complete list below.