WK4 Converter

Convert Lotus 1-2-3 spreadsheets (WK4) online for free


Drop or upload your .WK4 file
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How to convert your WK4 file

  1. Click the "Select File" button above, and choose your WK4 file.
  2. You'll see a preview.
  3. Click the "Convert file to..." button to save your file in the format you want.

Convert WK4 to another file type

The converter easily converts your WK4 spreadsheets to various formats - free and online. No Lotus 1-2-3 or or other Spreadsheet software needed.

  • WK4 to XLSX
  • WK4 to XLS
  • WK4 to ODS
  • WK4 to CSV
  • WK4 to TSV
  • WK4 to TAB
  • WK4 to DIF
  • WK4 to SLK
  • WK4 to PDB
  • WK4 to ODB
  • WK4 to PPTX
  • WK4 to UOP

Convert a file to WK4

To convert other file formats to the "Lotus 1-2-3 Worksheet" file type, you need software like Lotus 1-2-3 or a similar tool.


About WK4 files

A .WK4 file is a legacy spreadsheet created by Lotus 1-2-3 (Release 4), a once-dominant business application developed by Lotus Software and later acquired by IBM.

Natively, these files require the original, discontinued Lotus 1-2-3 software. Today, open-source tools like LibreOffice Calc or Gnumeric are the best desktop options for opening them because modern Microsoft Excel removed native support for Lotus files over a decade ago.

The format is entirely obsolete and proprietary. Keeping data stored in .WK4 is a major liability because most modern devices, web browsers, and enterprise suites will reject it. You cannot view it on mobile devices, and sending it to colleagues will inevitably result in compatibility errors.

To rescue your legacy data, you must convert the .WK4 file. For editing in modern software, convert to XLSX or CSV (note that complex legacy macros will be lost). For archiving and visual preservation, convert to PDF. Drop your file here to view and convert it securely right in your browser.

Use Convert.Guru to open and convert your WK4 file.

Users also converted 123, WK3, WK1, WPD, SAM, FM3, XLSX, LWP, CFG, JPG, ZIP and XLS files.


FAQ

If you want to convert WK4 file to XLSM, XLSB, WK1 or WK3, you can use Lotus 1-2-3 or similar software from the "Legacy Spreadsheet Storage" category. In the File menu, look for Save As… or Export….

To convert WQ1, XLSM, NOTES, QPW, WK3, WB2, WKS, XLSB, 123, XLS, WB1 or XLSX files to WK4, try Lotus 1-2-3 or another comparable tool in the "Legacy Spreadsheet Storage" category.



The WK4 Converter Story

The history of Convert.Guru began over 25 years ago in California with Tom Simondi’s file-format database. A former contributor to Space Shuttle development and a software pioneer of the 1980s, Simondi established a trusted resource for file type analysis that was even referenced by Microsoft Windows XP. Today, we use modern technology to process and convert thousands of file formats while continually improving our WK4 converter.