Home : File Types : WK4 File

.WK4 File Extension

FREE DOWNLOAD Open over 300 file formats with File Viewer Plus.

File TypeLotus 4 Worksheet

2.9 (15 Votes) Thanks for voting!
Rare Uncommon Average Common Very Common
CategoryData Files


This file is saved in a binary format, which requires a specific program to read its contents.


Spreadsheet created by IBM Lotus 1-2-3 (v.4), a spreadsheet program included with Lotus SmartSuite; stores data in cells that are organized into rows and columns; each cell can store static data or a formula, which automatically updates the value displayed in the cell.

More Information

NOTE: Previous versions of Microsoft Excel could import WK4 files, but Excel 2007 and later does not support the WK4 format.

Programs that open WK4 files
IBM Collaboration Solutions
Lotus 1-2-3 WK4 File Converter
Corel Quattro Pro X7
IBM Collaboration Solutions
Lotus 1-2-3 WK4 File Converter
Updated 8/10/2011

FileInfo - The File Extensions Database

This page contains information about the .WK4 extension and its known file associations. Our goal is to help you understand what a WK4 file is and how to open it.

The Lotus 4 Worksheet file type, file format description, and programs listed on this page have been individually researched and verified by the FileInfo team. We strive for 100% accuracy and therefore do not publish any information we have not verified.

If you would like to suggest any additions or updates to this page, please let us know!