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Lotus 1-2-3

by IBM · opens 10 file types
Windows
Download (www-01.ibm.com)
Verified by Adam B.· reviewed by FE Editorial ·updated Jun 19, 2026
AT A GLANCE
DeveloperIBM
PlatformsWindows
Opens10 file types
Get it fromwww-01.ibm.com
Download Lotus 1-2-3

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10 file types verified
Last reviewed Oct 2026

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What is Lotus 1-2-3?

Lotus 1-2-3 was a spreadsheet application originally developed by Lotus Development Corporation and later maintained by IBM after its acquisition of Lotus. It was one of the dominant business applications of the 1980s and early 1990s before being displaced by Microsoft Excel.

Files Lotus 1-2-3 opens

10 formats
Data Files
.TDL.WK3.WK2.WK5.WKE
Spreadsheet Files
.WKU.WKI.WJ3.FJ3
Text Files
.WT4

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File conversions with Lotus 1-2-3

10 conversions
WKS123WK4WK1WK1WK4WKSWK1123WK1WK1123123PRN123WK4WK4123WK1WK2

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Download Lotus 1-2-3

SOURCEwww-01.ibm.comofficial site - avoid third-party download portals
PLATFORMSWindows
Download from www-01.ibm.com

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programs & formats

Files Lotus 1-2-3 opens most

1.TDLTab Delineated file format
2.WK3Lotus 1-2-3 version 3.x spreadsheet file
3.WK2Lotus 1-2-3 version 2 spreadsheet file
4.WK5Lotus 1-2-3 version 5 spreadsheet file
5.WKULotus 1-2-3 spreadsheet file
6.WKELotus 1-2-3 Educational version spreadsheet file

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