The most reliable way how to work with ancient Lotus 1-2-3 spreadsheets (.wk1, .wk2) would be to use the original tool, perhaps in a virtual machine. If you do not have access to the original tool, you have to use some 3rd party software for the job, for example some open source productivity suites that may still support old Lotus 1-2-3 formats.
Convert Lotus 1-2-3 version 2.x spreadsheet to Lotus 1-2-3 version 2 spreadsheet file.
We found one software available in the database for this conversion.
Microsoft Windows software - convert wk1 to wk2 on Windows
Old spreadsheet program from IBM
Convert from wk1 file format
|Yes, Lotus 1-2-3 supports wk1 file conversion as a source file type.||Yes||Yes||wk1 editor||Yes||No||No||No|
The table with program actions contains information about what each program is capable of doing with their files. This may be a good pointer for further searches for certain file conversions and help you find the converter you are looking for if our search result is insufficient for you. However, it is far from perfect and may sometimes show results which are not really usable because of the nature of the software handles the files. So a conversion that appears as possible, just because of matched actions, may in fact not be possible.