Windows
Mac OSWhat is the WK5 file format?
A file with the .WK5 extension is a file known as Lotus 1-2-3 version 5 spreadsheet. It belongs to the Data Files category. This format is associated with IBM.
The reliable way to open a .WK5 file is with software that recognises this exact format, rather than guessing from the file name. If you are not sure what created a file, our file identifier can read its first bytes and name the real format, even when the file has been renamed.
This page lists 5 programs that open .WK5 files. A fully verified, hand-written description of this format is being prepared; until then, the details on this page are drawn directly from our database.
Format details
in a nutshellPrograms that open WK5 files
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