.WK! File

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.