We have found 3 software records in our database eligible for .xlsx to .wk4 file format conversion.
The best option for xlsx to wk4 conversion would be to export the XLSX spreadsheet to CSV and then importing the CSV to some previous versions of spreadsheet programs that still support the WK4 format from Lotus 1-2-3. Several choices exist, but the support for these old formats dwindles.
Updated: March 11, 2022
XLSX
Files with xlsx extension are s used by Microsoft Excel for its workbooks (spreadsheets) in Office Open XML format. XLSX is the latest spreadsheet format used by Excel with adoption of XML formatting first used in Office 2000. While older xls files were binary in nature, xlsx spreadsheets are using somewhat altered XML scheme.
WK4
A wk4 file extension is related to the Lotus 1-2-3 spreadsheet editing software, developed by IBM. A wk4 file stores spreadsheet document.
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