The most reliable way how to work with ancient Lotus 1-2-3 spreadsheets (.wk1, .wk!, etc.) 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.
Home > Search converters: wk! to wk1
Conversion of wk! file format to wk1 file format beta
Search for wk! to wk1 converter or software able to handle these file types.
Convert Lotus 1-2-3 spreadsheet to Lotus 1-2-3 version 2.x spreadsheet.
We have found 5 software records in our database eligible for .wk! to .wk1 file format conversion.
Microsoft Windows software 
- convert wk! to wk1 on Windows
Lotus 1-2-3
Old spreadsheet program from IBM
File extension | Convert | Open | Save | Edit | Create | Import | Export | Extract |
|---|---|---|---|---|---|---|---|---|
Convert from wk! file | No | Yes | Yes | wk! editor | Yes | No | No | No |
to wk1 file | Yes, Lotus 1-2-3 supports wk1 file conversion as a target file type. | Yes | Yes | wk1 editor | Yes | No | No | No |
The tables with software actions are a good pointer for what a certain program does with various file types and often may give users a good hint how to perform certain file conversion, for example the above-mentioned wk! to wk1. However, it is not perfect and sometimes can show results which are not really usable because of how certain programs work with files and the possible conversion is thus actually not possible at all.
Microsoft Excel
A popular spreadsheet application distributed with Microsoft Office suite
Corel Quattro Pro
A spreadsheet software application from Corel
Multiplatform software 
- convert wk! to wk1 on any platform
Apache OpenOffice Calc (OpenOffice.org Calc)
Spreadsheet program from OpenOffice.org productivity suite
LibreOffice Calc
Full-featured spreadsheet tool from LibreOffice suite
Additional links: Open wk! file, Open wk1 file
WK!
A wk! file extension is related to the Lotus 1-2-3 spreadsheet editing software. A wk! file stores spreadsheet.
WK1
Files with wk1 file extension are spreadsheets saved in old Lotus 1-2-3 office program. These files were used in version 2.X.
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