WK4 File Extension

Programs that support WK4 files

• Windows ⁶
• Mac OS ¹
• Linux ¹

Windows

• Lotus 1-2-3
• LibreOffice Calc
• Corel Quattro Pro
• Microsoft Excel
• ABC Amber Lotus Converter
• ABC Amber Text Converter

Mac OS

• LibreOffice Calc

Linux

• LibreOffice Calc

How to open a WK4 file?

The most common reason why a WK4 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.

The most popular programs for working with WK4 files are Lotus 1-2-3, LibreOffice Calc and Corel Quattro Pro. To get the latest version of Lotus 1-2-3, open the IBM website where a universal installer for all operating systems is available.

Following installation, WK4 files should be automatically opened with Lotus 1-2-3.

Set Lotus 1-2-3 as the default WK4 program

Changing the default program in Windows

1. Start by right-clicking on your WK4 file and selecting the "Open With" option. From there, click "Choose another app" to continue;
2. In the pop-up window, select the Lotus 1-2-3 application;
3. Check the "Always use this application" checkbox, and then click "OK" to apply the selected application as the default for opening WK4 files.

Change Default Program on Mac

1. Right click or Control + left click on the desired WK4 file;
2. Select "Open in application" and click "Other";
3. Look at the bottom of the window, where you will see the "Enable" menu. "Recommended Programs" will be selected as the default option;
4. Within this menu select "All Programs" and navigate to Lotus 1-2-3. Check the box next to "Always open in app" to make sure it’s the default option.

Convert to and from WK4

If a WK4 file is difficult to handle, you might try converting it to formats such as PDF, CSV, XLS, XLSX, ODS or similar, which may be easier to work with.

Please note that after converting a WK4 file, some functionality may differ from the original. However, in many cases, it can be converted back to its original format.

Using offline applications such as Lotus 1-2-3, LibreOffice Calc and Microsoft Excel, you can convert WK4 files to various formats without losing data quality.

Convert WK4 to other file formats

• WK4 to PDF
• WK4 to XLS
• WK4 to WK1
• WK4 to ODS
• WK4 to CSV
• WK4 to X

Converting Files to WK4 Format

• XLS to WK4
• WK1 to WK4
• XLSX to WK4

Solve problems with WK4 files

When issues arise with WK4 files, they can generally be fixed with small software tweaks. Use the troubleshooting tips below to help resolve them.

How to edit a WK4 file?

To edit WK4 files, you need to install specialized software that allows you not only to open but also to modify spreadsheet files. Online WK4 editors usually provide fewer features than software created specifically for Lotus 4 Worksheet.

Best WK4 editors in 2026

Taking into account the provided details, we have prepared a list of WK4 editors that match your needs.