The File Extensions Database


.WK! File Extension

  • Developer by: IBM
  • Category: Spreadsheet and workbook Files

What is an .WK! file?

.WK! is Lotus 1-2-3 spreadsheet

The wk! file extension is associated with Lotus 1-2-3, a spreadsheet editing software for Microsoft Windows, MS-DOS, OS/2 and Mac.

The wk! files were used by some earlier version of Lotus 1-2-3.

MIME types:
application/vnd.lotus-1-2-3
application/x-123

This wk! file type entry was marked as obsolete and no longer supported file format.

This type of file is no longer actively used and is most likely obsolete. This is typically the case for system files in old operating systems, file types from long discontinued software, or previous versions of certain file types (like documents, projects etc.) that were replaced in higher versions of their original programs.


How to open:

Use Lotus 1-2-3 to open the .wk! files. Also some spreadsheets programs can still open the .wk! files, however the latest Microsoft Excel 2007/2010 no longer support that format.You can have luck with any earlier version of Excel, but you will probably loose some of the formatting from the *.wk! files.

How to convert:

Use compatible apps to export *.wk! files to other formats.

How to solve problems with WK! files

  • Associate the WK! file extension with the correct application. On :
    Windows: Right click on any WK! file and then click "Open with" > "Choose another app". Now select another program and check the box "Always use this app to open *.WK! files". Mac: Right click (or Ctrl-click) the WK! file, then click "Open with" > "Other...". Then choose another program and check the "Always Open With" box. Linux: Right click on the file, and select "Open with" and choose another program. iPhone: Tap the file. If you do not see an app to open the file, then tap Share "Share" and choose an app. Alternatively, save the file. Then open the Files app Files app. There long-press on the file, then release your finger. You will see a black menu bar. Then tap "Share" and select an app. Android: Tap the Settings icon on your smartphone, then tap on the Apps section. There tap the Options icon in the top right-hand corner of the screen to change the default apps.
  • Update your software that should actually open .WK! is Lotus 1-2-3 spreadsheet. Because only the current version supports the latest WK! file format. Search, therefore, e.g. on the IBM manufacturer website after an available .WK! is Lotus 1-2-3 spreadsheet update.
  • To make sure that your WK! file is not corrupted or virus-infected, get the file again and scan it with antivirus software.