WK4 File - opening and understanding

Did your computer fail to open a WK4 file? We explain what they are used for and recommend software that we know can open or otherwise handle your .WK4 files.

What is a WK4 file?

A .WK4 file is a Lotus 123 Worksheet file. Files with the .wk4 file extension are most commonly associated with version 4 of the Lotus 1-2-3 spreadsheet software. Spreadsheets created with this software store data in cells that are organized into columns and rows. These spreadsheets are commonly used for data entry and accounting purposes. Spreadsheets created with the software are saved with the .wk4 file extension.

How to open WK4 files

You will need a program compatible with the specific file you are trying to open, as different programs may use files with file extension WK4 for different purposes.

While we have not verified the apps ourselves yet, our users have suggested 10 different WK4 openers which you will find listed below.

Suggest another file format using extension WK4

While we know of one file format using the .WK4 file extension, there may be more. It is widespread that different programs use files with the same file extension for very different types of data. Please let us know if you are aware of a different kind of .WK4 file.

Various viewers for this file format

These apps are known to open certain types of WK4 files. Remember, different programs may use WK4 files for different purposes, so you may need to try out a few of them to be able to open your specific file.

Stuffit ExpanderStuffit ExpanderUser submitted
Microsoft OfficeMicrosoft OfficeUser submitted
Any Video Converter ProfessionalAny Video Converter ProfessionalUser submitted
IBM LotusIBM LotusUser submitted
LotusLotusUser submitted
progeCAD ProfessionalprogeCAD ProfessionalUser submitted
LotusLotusUser submitted
progeCAD Professional EnglishprogeCAD Professional EnglishUser submitted
TimetableTimetableUser submitted
123W123WUser submitted
We have not verified any software that we know for certain will work with WK4-files on Mac. If you know one, please use the 'Suggest a program' link below and tell us about it!
We have not verified any web services that we know for certain will work with WK4-files. If you know one, please use the 'Suggest a program' link below and tell us about it!