Browse Tools Top 100
WK3 XLS
Free online converter

Convert WK3 to XLS

Convert now
WK3 to XLS converterFREE
Drop a .WK3 file here
or pick one - we convert it to .XLS and give you the file to download

On this page

Tested on macOS, Windows & Linux
Last verified Oct 2026

More free converters

HEIC, PNG, WEBP, MP3 and more - every tool here is free.

Open the toolbox

How to convert WK3 to XLS

  1. Add your .WK3 file - drop it in the box above or click to browse.
  2. Convert it to .XLS in a few seconds.
  3. Download your new .XLS file.

What to expect

  • Cells, rows and columns map directly since both are spreadsheet formats, keeping the workbook functional.
  • Lotus 1-2-3 formulas and functions may not translate exactly to Excel's model; verify calculated cells.
  • WK3 is an obsolete format, so conversion is a recovery step and results should be spot-checked.

Frequently asked questions

Is the spreadsheet data preserved?
Mostly yes. Both WK3 and XLS are spreadsheet formats, so cells, rows and columns map directly and the workbook stays a working spreadsheet. Fidelity is better than converting to a document format because the structure is comparable.
Why convert WK3 to XLS?
WK3 is a legacy Lotus 1-2-3 format that current spreadsheet software generally cannot open, whereas XLS is the widely supported Excel 97-2003 format. The conversion brings old data into a format today's tools understand.
Where does the XLS open?
XLS opens in current spreadsheet applications and online sheet editors without needing to buy Excel. For long-term use, saving onward to XLSX is often preferable.
What might not transfer perfectly?
Lotus 1-2-3 formula syntax and functions differ from Excel's, so some formulas may need review after conversion. Cell values transfer reliably; older Lotus-specific features are the parts most likely to need checking.
Learn about the formats: .WK3 · .XLS
Programs that convert WK3: Microsoft Excel · Corel Quattro Pro · LibreOffice Calc · OpenOffice.org Calc