.WK1 File Extension

.WK1 File Extension

File Type

Lotus Worksheet

Developer IBM
Popularity
2.1  |  14 Votes
Category Data Files
Format Binary

What is a WK1 file?

Spreadsheet created by Lotus 1-2-3, a popular spreadsheet program in the 1990s; contains cells, which are organized by rows and columns; used to store and analyze structured data, as well as quickly compute formulas.

More Information

Lotus 1-2-3 is included with Lotus SmartSuite, which was acquired by IBM in 1995.

NOTE: WK1 files can be opened in some versions of Microsoft Excel. However, some formatting information may be lost during conversion. WK1 files are no longer supported by Excel 2007 and later.

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Programs that open WK1 files

Windows
IBM Lotus 1-2-3  —  Discontinued
Mac
IBM Lotus 1-2-3  —  Discontinued
Linux
Updated April 8, 2014

Verified by FileInfo.com

The FileInfo.com team has independently researched the Lotus Worksheet file format and Mac, Windows, and Linux apps listed on this page. Our goal is 100% accuracy and we only publish information about file types that we have verified.

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