PC.net

.wk1

File Type Lotus Worksheet IconLotus Worksheet
File Format Proprietary (IBM)
Usage Open manually
Rank ★ ☆ ☆  Uncommon
Description

Spreadsheet created by Lotus 1-2-3, the first major spreadsheet application; contains data organized into rows and cells; Lotus 1-2-3 is part of Lotus SmartSuite, which was acquired by IBM in 1995.

Important: WK1 files can be opened in Microsoft Excel, but some formatting information may be lost in the conversion process; also, WK1 files are no longer supported by Excel 2007 and later.

Open With
Windows

IconIBM Lotus 1-2-3

IconCorel Quattro Pro

IconOpenOffice Calc

macOS

IconIBM Lotus 1-2-3

IconPlanamesa NeoOffice

IconOpenOffice Calc

Unix

IconOpenOffice Calc

IconGnumeric

Updated March 18, 2010
Information from the PC File Extensions Reference
https://pc.net/extensions/file/wk1
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