File Extension WK3

  • Full name
    Lotus 1-2-3 Version 3.x Spreadsheet Format
  • Developer
  • Popularity
Have you encountered a problem with a WK3 file? Don’t you know which program opens a file with this extension? You will find all the information you need about working with a WK3 file here. In the further part of this page we have added a list of programs that should open your WK3 file. It is enough you choose a proper application for your operating system, download and install it.


The extension WK3 identifies tables (spreadsheets) of the spreadsheet Lotus 1-2-3 from IBM. The extension was used by version 3 of Lotus 1-2-3.

The file contains data in cells organized in columns and rows. In addition, the files may also contain graphics, formulas, and macros. Unfortunately, these macros may also contain malicious code, which is why it is advisable, especially for files from unknown sources, to subject them to virus scanning before executing the macros.

Originally developed by Lotus Corporation, Lotus 1-2-3 was a popular spreadsheet as part of Lotus SmartSuite in the 1990s. IBM acquired Lotus in 1995. The Lotus SmartSuite is discontinued but is still available.

Some versions of Microsoft Excel support Lotus 1-2-3 files, but from version 2007 onwards. The import of files is subject to restrictions, some properties may be lost.

Programs which can open a WK3 file

How to open a WK3 file? Advice and guidance

Absolutely most often appearing reason that prevents you from opening the WK3 file is the lack of a proper application to support it in your operating system. It is notably the first thing you need to address. When one of the programs to support a WK3 file from the list is already installed, you can try to rerun the file. The system should display a message asking you to choose a primary application to support WK3 files. At this point we are looking for disk space where the application was installed in and we can link it with a WK3 file. Since then, our operating system will use the selected program to support all WK3 files.

Other issues

Despite the described problem with WK3 there may be many more problems. If the existing operations were not effective, get involved with the following matters:

- verify that the WK3 file is not damaged and that it has been downloaded or copied in whole
- verify that the file has a file extension that has not been intentionally changed (for example, if it do not contain other information than its extension suggests)
- make sure again whether the WK3 file type is linked in the operating system with a proper program
- make sure that the file is not infected with a virus and you have up to date software and drivers.

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