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.WK3 File Extension

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File TypeLotus 3 Worksheet

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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 file created by Lotus 1-2-3, version 3; stores data in cells, which are organized into a grid of rows and columns; may be used for a variety of data-entry purposes.

More Information

NOTE: Microsoft Excel 2007 and later no longer support WK3 files.

Programs that open WK3 files
IBM Collaboration Solutions
Microsoft Excel 2016
IBM Collaboration Solutions
Microsoft Excel 2016
Updated 3/18/2010

FileInfo - The File Extensions Database

This page contains information about the .WK3 extension and its known file associations. Our goal is to help you understand what a WK3 file is and how to open it.

The Lotus 3 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 We strive for 100% accuracy and therefore do not publish any information we have not verified.

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