WK! File Extension
Lotus 1-2-3 Spreadsheet
- File Type wk!
- Developer IBM
- Popularity
- Application Lotus 1-2-3
- Category Spreadsheet Files
What is a WK! file?
The WK! extension is related to Lotus 1-2-3 Spreadsheet and is classified in the Spreadsheet Files category, which contains 113 files.
The Lotus 1-2-3 Spreadsheet (WK!) was developed by IBM, which created file format and 70 programs to work with them.
WK! files are supported by Windows, Linux and Mac OS. To open a WK! file, you can choose from 6 programs such as Lotus 1-2-3, OpenOffice Calc and Ability Spreadsheet.
MIME types
- application/vnd.lotus-1-2-3
- application/x-123
Programs that support WK! files
How to open a WK! file?
If you cannot open a WK! file, it is most often due to missing software. Select a program from the list according to your operating system. Then go to the official website of the program developer, download it, and install it on your device.
Lotus 1-2-3, OpenOffice Calc and Ability Spreadsheet stand out as the preferred programs to manage WK! files effectively. To install the current version of Lotus 1-2-3, go directly to the official IBM website. The universal package for all operating systems is available there.
After successful installation, your operating system should seamlessly handle WK! files via Lotus 1-2-3.
Set Lotus 1-2-3 as the default WK! program
Change Default Program on Mac
- Right click or Control + left click on the desired WK! file;
- Choose "Open in Application" and click "Other";
- Go to the lower section of the window, where you will find the "Enable" menu. By default, it is set to "Recommended Programs";
- Select "All Programs" from this menu and proceed to search for Lotus 1-2-3. Check the box next to "Always open in app" to set it as the default option.
Set default programs for Windows
- Start by right-clicking on your WK! file, then select the "Open with" option and choose "Choose another app" from the menu that appears;
- In the pop-up window, select the Lotus 1-2-3 application;
- Check the "Always use this application" checkbox, and then click "OK" to apply the selected application as the default for opening WK! files.
Solve problems with WK! files
WK! files may present some challenges, but most can be easily addressed with minor software tweaks. See the troubleshooting tips below for guidance.
What are the ways to check if my WK! file is damaged?
WK! spreadsheet files that have become corrupted may display one or more of the following symptoms:
- The file does not respond or shows errors when opening it;
- The file exhibits poor performance during editing operations in Lotus 1-2-3;
- The file stops responding or freezes in Lotus 1-2-3 or other programs;
- Unexplained WK! file size inflation;
- Actions performed on the file result in the appearance of error notifications;
Why does Lotus 1-2-3 crash or shut down frequently?
Insufficient updates for IBM products can cause Lotus 1-2-3 to crash. Be sure to regularly install the latest software updates.
Restarting your computer will solve many common problems, which is why it’s the first thing you should do before changing any settings related to the software.
Is there any specific software or utility that can help repair a damaged WK! file?
Use a recovery program to open the damaged WK! file, and in the menu, click "Repair" to start the repair operation. Wait for the recovery process to finish, allowing automatic repair of damaged spreadsheet files.
How to edit a WK! file?
To make changes to WK! files, you need specialized software that allows both opening and editing the spreadsheet files. Online WK! editors offer fewer capabilities than applications optimized for Lotus 1-2-3 Spreadsheet.
Best WK! Editor Software in 2026
With the mentioned criteria in mind, we have assembled a selection of WK! editors.
| WK! Editor Software | Developer | Platforms | Overall Rating |
|---|---|---|---|
| Ability Spreadsheet | Ability Plus | Windows | 4.5 out of 5 (39 reviews) |
| Lotus 1-2-3 | IBM | Windows | 4.4 out of 5 (41 review) |