Conversion of xlsx files to xlsb file format

As both the .xlsx  and .xlsb files are from Microsoft Excel, which means the easiest way to achieve xlsx to xlsb conversion is to use the program. The reason for this is to create binary workbooks that are much faster to load. You can create a .xlsb workbook from existing .xlsx spreadsheet in Microsoft Excel with the File ► Save as... function.

Open XLSX file    Open XLSB file

Related software

Apache OpenOffice Calc icon

Apache OpenOffice Calc

Spreadsheet program from OpenOffice.org productivity suite

LibreOffice Calc icon

LibreOffice Calc

Full-featured spreadsheet tool from LibreOffice suite

Microsoft Excel icon

Microsoft Excel

A popular spreadsheet application distributed with Microsoft Office suite

Microsoft Excel for Mac icon

Microsoft Excel for Mac

A popular spreadsheet application from the Microsoft Office suite