The most reliable way how to work with ancient Lotus 1-2-3 spreadsheets (.wk1, .wk4 etc.) would be to use the original tool, perhaps in a virtual machine. If you do not have access to the original tool, you will 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: wk1 to wk4
Conversion of wk1 file format to wk4 file format beta
Search for wk1 to wk4 converter or software able to handle these file types.
Convert Lotus 1-2-3 version 2.x spreadsheet to Lotus 1-2-3 version 4.x spreadsheet.
We have found 4 software records in our database eligible for .wk1 to .wk4 file format conversion.
Microsoft Windows software 
- convert wk1 to wk4 on Windows
Lotus 1-2-3
IBM Lotus 1-2-3 is spreadsheet application very popular in 80s and 90s of 20th century. It was released for Microsoft Windows, MS-DOS, Mac OS and OS/2. In 2002 IBM stopped the developing of the IBM Lotus 1-2-3. In the latest versions is Lotus 1-2-3 fully compatible with Microsoft Excel.
File extension | Convert | Open | Save | Edit | Create | Import | Export | Extract |
|---|---|---|---|---|---|---|---|---|
Convert from wk1 file | Yes, Lotus 1-2-3 supports wk1 file conversion as a source file type. | Yes | Yes | wk1 editor | Yes | No | No | No |
to wk4 file | Yes, Lotus 1-2-3 supports wk4 file conversion as a target file type. | Yes | Yes | wk4 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 wk1 to wk4. 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.
Corel Quattro Pro
Corel Quattro Pro is spreadsheet application distributed as a part of Corel WordPerfect Office suite. The latest version of this application is Corel Quattro Pro X8, which is part of Corel WordPerfect Office X8 suite.
Microsoft Excel
A popular spreadsheet application distributed with Microsoft Office suite, Excel is offers calculating, contains graphing tools, pivot tables and own programming language based on Visual Basic.
Excel supports charts, graphs or histograms generated from specified groups of cells. Excel also can change data between other Microsoft Office applications. It is available for Microsoft Windows, Mac OS X (macOS) and various mobile platforms.
Multiplatform software 
- convert wk1 to wk4 on any platform
LibreOffice Calc
LibreOffice Write is a powerful spreadsheet program that supports all major workbook formats and has many intuitive features. It's an open source software that comes as an integral part of LibreOffice suite.
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