Opening WK3 Files

The WK3 file type is primarily associated with Lotus 1-2-3.

WK3File Extension WK3
 File extension: WK3
File type:  spreadsheet

What is a WK3 file?

WK3 files mostly belong to Lotus 1-2-3. Lotus 1-2-3 Spreadsheet File (WK3): This file is used with Lotus 1-2-3 to store worksheet data. It holds numbers, text, and formulas in a binary format that was common in early spreadsheet programs.
File Details:
  • Designed for managing tabular data in a grid.
  • Stores calculations and formatting used in Lotus 1-2-3.
  • Requires conversion for use in many modern applications.
    • FilExt.com note: To view or convert these files, try using software like LibreOffice or Microsoft Excel. For more technical details, visit IBM.

    How to open WK3 files

    You need a suitable software like Lotus 1-2-3 to open a WK3 file. Without proper software you will receive a Windows message "How do you want to open this file?" or "Windows cannot open this file" or a similar Mac/iPhone/Android alert. If you cannot open your WK3 file correctly, try to right-click or long-press the file. Then click "Open with" and choose an application. You can also display a WK3 file directly in the browser:. Just drag the file onto this browser window and drop it.

    Online WK3 File Viewer

    Choose your .wk3 file to view
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    How to convert a WK3 file to XLS, XLSX, ODS, CSV, TXT, PDF, ...

    If you want to convert or edit a WK3 file, you can use our free Online WK3 File Converter (powered by Convert.Guru):
    1. Just click the "Choose your .wk3 file to view" button on this page.
    2. Your WK3 file will then be displayed in the browser.
    3. Now click on "Save as..." at the top of the page.
    4. Then choose the desired spreadsheet format (e.g. XLS, XLSX, ODS, CSV, TXT, PDF, ...).
    5. Download the converted file.

    Programs that open and convert WK3 files:

    1. Lotus 1-2-3
      See the previous paragraphs to learn more about the main application. WK3 files are often referred to as Lotus 1-2-3 spreadsheets because this type of file is primarily created or used by this software.
    2. 1-2-3 (Spreadsheet File) by IBM
      Lotus 1-2-3 version 3 spreadsheet. This was a Lotus product. Lotus was bought out by IBM. The Mime types used with this association are: application/vnd.lotus-1-2-3, application/lotus123, application/x-lotus123, application/wk3, application/x-lotus123, application/x-wk3. The identifying characters used for this association are - Hex: 00 00 1A 00 00 10 04 00 00 00 00 00. This file format is classified as Spreadsheet.

    WK3 file format:

    To view or edit WK3 files you need to know the file format, because it determines how the data in this file is stored. The file format can be determined based on the file extension and the signature (the first few characters of a file). However, different programs can use the same file extension. Furthermore, a file extension can be renamed incorrectly and double-clicking on it will then display an error when it is opened. So you need a detailed analysis of a file to find out the format and the associated program. Below you will find our evaluation of the WK3 files:

    The WK3 file extension is rather rarely used and mainly uses a special format. But the following two file formats are common:

    The remaining 5% of all WK3 files are files with no common format. If you want to find out which format your WK3 file belongs to, just click on the button "Choose your .wk3 file to view".

    Technical Data for WK3 File Extension

    File classification:
    Spreadsheet
    Identifier:
    Hex: 00 00 1A 00 00 10 04 00 00 00 00 00 (provided by TrID database)
    Related files:
    wk1, 123, xlsx, fm3, wk%21, wk4, fm1, xls, csv
    Mime type:
    application/vnd.lotus-1-2-3, application/lotus123, application/x-lotus123, application/wk3, application/x-lotus123, application/x-wk3

    The following listing is compiled from the database produced by the 'Associate This!' program, selected data from the main FILExt database and file extension information submitted by users.

    ProgramID: 123Worksheet
    EXEFile: C:\lotus\123\123w.exe %1
    ProgramID: MoreInfo
    EXEFile: %ProgramFiles%\Netzip Classic\MoreInfo.exe %l
    ProgramID: wk3file
    EXEFile: %ProgramFiles%\Verity\KVLotus\KVLOTUS.EXE %1
    ProgramID: 123Worksheet
    EXEFile: %ProgramFiles%\lotus\123\123w.exe %1
    ProgramID: Pagis.EDoc
    EXEFile: %ProgramFiles%\ScanSoft\Pagis\EDocView.exe
    Show all 5 listingsTo Top

    a wk3 spreadsheet is a special file format and should only be edited and saved with the appropriate software.

    How to solve problems with WK3 files

    • Associate the WK3 file extension with the correct application.
    • Update your software that should actually open spreadsheets. Because only the current version supports the latest WK3 file format. Search, therefore, e.g. on the manufacturer website after an available Lotus 1-2-3 update.
    • To make sure that your WK3 file is not corrupted or virus-infected, get the file again and scan it with Google's virustotal.com.
    • Click here to open your .WK3 file online - secure, fast, and no downloads needed.
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