How to convert WK1 to XLSX
- Add your .WK1 file - drop it in the box above or click to browse.
- Convert it to .XLSX in a few seconds.
- Download your new .XLSX file.
What to expect
- Values, formulas, and multiple sheets are preserved in the XLSX package; only Lotus features without a modern equivalent may be dropped.
- The output is a fully editable, current-standard spreadsheet rather than a static snapshot.
- Plain XLSX carries no macros, so converting produces a simple data workbook.
Frequently asked questions
What carries over from WK1 to XLSX?
The worksheet's values, most formulas, and basic formatting move into the modern Excel workbook. Older Lotus-specific features may not map exactly onto the Open XML model.
Why convert WK1 to XLSX?
WK1 is a proprietary Lotus 1-2-3 format that Excel stopped supporting in 2007, while XLSX is the current Excel standard. Converting makes decades-old data editable in today's spreadsheet tools.
Where does an XLSX file open?
In Microsoft Excel, Excel for the web, Google Sheets, and LibreOffice Calc - none of which require a purchase to open it. Support is essentially universal among spreadsheet apps.
Is XLSX safer than the old XLS format?
A plain XLSX cannot contain VBA macros, so it avoids the classic macro-malware vector of legacy binary files. That makes it a cleaner archival target than XLS for simple data.
Programs that convert WK1: Microsoft Excel · Corel Quattro Pro · Apache OpenOffice Calc (OpenOffice.org Calc) · LibreOffice Calc
