How to Save Spreadsheets as .xlsx with Kingsoft Office

The latest Kingsoft Office Suite 2013 (both Office Free and Office Professional) is able to save workbooks as the Microsoft Excel 2007/2010 Open XML formats .xlsx and .xlsm.

save spreadsheet as xlsx

To convert .xls document to .xlsx, you need to open it in Kingsoft Spreadsheets 2013, and press Spreadsheets > Save as > Microsoft Excel 2007/2010 Files. In the pop-up Save as window, the *.xlsx type is chosen as default (see above picture). Press Save.

save workbook as xlsx