Open WK1 File
A file of WK1 format and extension, it is a spreadsheet created by Lotus 1-2-3, a popular spreadsheet program in the 1990s.
Lotus 1-2-3 was a spreadsheet editing and processing program, developed by the American company Lotus Development Corporation, which was bought by IBM in the mid-1990s, and is now defunct.
Lotus 1-2-3 was included with Lotus SmartSuite.
The WK1 file contains cells, which are arranged by row and column, just like modern spreadsheets do.
The WK1 is used to store and analyze structured data, as well as to quickly calculate formulas.
WK1 files can be opened in some versions of Microsoft Excel.
However, some of the formatting information may be lost during the conversion.
Anyway, you need to know that WK1 files are no longer compatible with Excel 2007 and later.