WK2 File Extension

Lotus 2 Worksheet
- File Type wk2
- Developer IBM
- Popularity
- Application Lotus 1-2-3
- Category Spreadsheet Files
- Format Binary
What is a WK2 file?
Files with the WK2 extension are specifically tied to Lotus 2 Worksheet, a Spreadsheet Files type, and there are 113 files in this category.
With the creation of the Lotus 2 Worksheet (WK2), IBM introduced file format along with 70 programs built for their use.
WK2 file support extends to various operating systems, including Windows. You can open a WK2 file using one of 5 programs, for example Lotus 1-2-3, Corel Quattro Pro and Microsoft Excel.
Programs that support WK2 files

Online Services
How to open a WK2 file?
The most common reason why a WK2 file cannot be opened is the absence of required software. To fix this, select a compatible program from the list. Then visit the official developer website via the provided link, download the program, and install it on your system.
Thanks to their popularity, Lotus 1-2-3, Corel Quattro Pro and Microsoft Excel are often the go-to programs for managing WK2 files. To install the updated version of Lotus 1-2-3, simply go to the IBM site and download the installer compatible with all major platforms.
After setup, the operating system should recognize WK2 files and link them with Lotus 1-2-3.
Set Lotus 1-2-3 to open WK2 by default
Change default apps on Mac
- Right-click or use Control + Left-click on the desired WK2 file to access the file’s context menu;
- Choose "Open in Application" and click "Other";
- Scroll down to the bottom of the window, and there you will find the "Enable" menu. The default selection is "Recommended Programs";
- Choose "All Programs" within this menu and locate Lotus 1-2-3. Check the box next to "Always open in app" to set it as the default program.
Change a default app in Windows
- Start the process by right-clicking on your WK2 file and selecting "Open With". From there, click "Choose another app" to continue;
- Find the Lotus 1-2-3 application in the pop-up window and select it as your preferred program;
- Select the "Always use this application" check box and click "OK" to save your selection as the default application for opening WK2 files.
Easy WK2 Troubleshooting
WK2 files can sometimes be tricky, but minor software adjustments usually resolve the issues. Refer to the tips below for guidance.
Why does Lotus 1-2-3 stop responding or crash intermittently?
Lack of regular software updates can cause Lotus 1-2-3 to crash. Make sure you have installed the latest updates for IBM products.
Restarting your computer is often an effective solution to resolve various common problems. Therefore, it is recommended to do so before making any changes to the software configuration.
What are the best practices for repairing a WK2 file that has gone bad?
Start a recovery program, open the damaged WK2 file and then select the "Repair" menu item to start the repair procedure. Please wait patiently for the recovery process to finish as it will automatically repair the damaged spreadsheet files.
How can I confirm if my WK2 file has been damaged?
Characteristics of corrupted WK2 spreadsheet files can include:
- Editing the archive in Lotus 1-2-3 is hampered by poor overall performance;
- Trying to work with the archive in Lotus 1-2-3 or other programs causes instability or program crashes;
- The file does not open correctly or displays error messages;
- An unexplained increase in the size of the WK2 file;
- The file operation is accompanied by the display of error messages;
How to edit a WK2 file?
To modify WK2 files, you need to install special software that makes it possible to open and edit spreadsheet files. Online WK2 editors are more restricted compared to software designed for Lotus 2 Worksheet.
Best WK2 editors 2026
Based on your described criteria, here is a list of available WK2 editors.
| WK2 Editor Software | Developer | Platforms | Overall Rating |
|---|---|---|---|
| Lotus 1-2-3 | IBM | Windows | 4.4 out of 5 (41 review) |
Convert files to and from WK2
After converting a WK2 file, some capabilities may be limited, but you can often convert it back to the original format.






