Convert WK1 to XLT

The WK1 file extension, short for Lotus Worksheet, was used by the Lotus 1-2-3 spreadsheet software developed by Lotus Development Corporation and later acquired by IBM. These files stored data in a tabular format with cells organized by rows and columns, enabling users to perform data analysis and compute formulas efficiently. Although Lotus 1-2-3 has been discontinued, WK1 files can still be opened by some versions of Microsoft Excel and other compatible software like OpenOffice Calc. However, support for WK1 files was dropped in Excel 2007 and later versions.

The XLT file extension stands for Microsoft Excel Spreadsheet Template. It is used in Microsoft Excel versions 97 through 2003 to create templates containing default formatting, layout, and formulas. These templates serve as a starting point for generating new spreadsheets with consistent design and structure. Although replaced by the XLTX format in Excel 2007 and later versions, XLT files are still supported for backward compatibility.