WK1 to XLS Converter

Batch convert wk1 files to xls format online for free

Choose files or drag & drop them here.
Only you have access to your files.
All files will be deleted after one hour.

How to convert WK1 files to XLS online?

Step-by-step guide to convert wk1 to xls using AnyConv. It works on PC (Windows, Mac, Linux) and mobile devices (iPhone, Android).

Upload WK1-file

Drag and drop your WK1 file into the upload area. The maximum file size is 100 MB.

WK1 to XLS

Click "Convert" to change wk1 to xls. The conversion usually takes a few seconds.

Download your XLS

Now you can download the XLS file. The download link only works on your device.


  • ❓ How can I convert files from WK1 to XLS?
    First you need to add file for conversion: drag and drop your WK1 file or click the "Choose File" button. Then click the "Convert" button. When WK1 to XLS conversion is completed, you can download your XLS file.
  • ⏱️ How long does it take to convert WK1 to XLS?
    Document conversion is pretty fast. You can change WK1 to XLS in a few seconds.
  • 🛡️ Is it safe to convert WK1 to XLS on AnyConv?
    Of course! We delete uploaded files immediately, and converted ones after 1 hour. No one has access to your files. File conversion (including WK1 to XLS) is absolutely safe.
  • 💻 Can I convert WK1 to XLS on Mac OS or Linux?
    Yes, you can use AnyConv on any operating system that has a web browser. Our WK1 to XLS converter works online and does not require software installation.

Information about WK1 and XLS file formats

🔸 File format WK1 XLS
🔸 Full name Lotus 1-2-3 spreadsheet XLS - Microsoft Excel Binary File Format
🔸 File extension .wk1 .xls
🔸 MIME type application/vnd.lotus-1-2-3, application/x-123, application/lotus, application/x-lotus123, zz-application/zz-winassoc-123 application/vnd.ms-excel
🔸 Developed by IBM Microsoft
🔸 Type of format Spreadsheet
🔸 Description WK1 file extension is associated with Lotus 1-2-3 version 2.x and used for spreadsheet documents. The WK1 files were used as the default spreadsheet format of Lotus 1-2-3 version 2, including rows and columns, formulas, etc. Lotus 1-2-3 is a discontinued product. Microsoft Excel, up until 2007 version used a proprietary binary file format called Excel Binary File Format (.XLS) as its primary format. Excel 2007 uses Office Open XML as its primary file format, an XML-based format that followed after a previous XML-based format called "XML Spreadsheet".
🔸 Technical details OpenOffice.org has created documentation of the Excel format. Since then, Microsoft has made the Excel binary format specification available to download freely.
🔸 File conversion WK1 conversion XLS conversion
🔸 Associated programs Lotus 1-2-3 Microsoft Office, LibreOffice, Kingsoft Office, Google Docs.
🔸 Wiki https://en.wikipedia.org/wiki/Lotus_1-2-3 https://en.wikipedia.org/wiki/Microsoft_Excel#File_formats