Logo
arrow1 File Converters
arrow1 TIFF and PDF apps
arrow1 Forensic
arrow1 Freeware

Convert WK3 to XLSX Online


1) Upload WK3 file to convert

 

Drop files here, or Click to select
0 %

Allowed file types: qif, iif, srt, ics, feather, excel, ris, bib, ods, xls, xlsx, xlsm, csv, tsv, tab, xlsb, xltx, xlr, pxl, qpw, wb3, wq1, dbf, wk3, 123, mdb, evtx, pages, numbers, sqlite

2) Set converting WK3 to XLSX options

Convert to

 

Options

Header:
Footer:

3) Get converted file

DOWNLOAD CONVERTED FILE
Full version
Get Total Excel Converter to convert XLS, XLSX, ODT, XLSM, etc. safely.

Excel Converter To Convert Spreadsheets
  • Convert Excel Files in Batch!;
  • Convert WK3 to XLSX and in many other formats
  • Convert hundreds of spreadsheets in 3 clicks;
  • Both MS Office and OpenOffice files;
  • Have a desktop converter that works without Internet;
  • Keep your files safe, don't send them to the web;
  • Get more accurate results with the more poweful engine.
See features
NOW 20% OFF - $59.90 $41.93
*Only this month. Not for resellers.
close Total Excel Converter
okTotal Excel Converter supports almost all Excel extensions: XLS, XLSX, XLSM, XLSB, XLT, XLTM, XLTX, XLK, XLW. When the new Office is released, we will add new file types too.
okWith Total Excel Converter you can convert Excel to PDF and add a digital signature in one go.
okTotal Excel Converter can convert each page of your spreadsheet into a separate file.
okTell Total Excel Converter to copy original time stamps if you don't want to change the date.
okHave an outdated Microsoft Office 2003? Update all your old files to the new format in one go. Convert XLS files to XLSX in batches.
okTotal Excel Converter will help you to convert Excel 2003 XML Files (rare option!)
okTotal Excel Converter has a built-in renamer to give your files new descriptive names. Include a counter, a date or worksheet name into the file name and your files will be in perfect order.
okConvert Excel spread sheets via our most straightforward interface.
okThe widest list of output file types: DOC, PDF, HTML, MHT, XHTML, CSV, TXT, TIFF, JPEG, SVG, RTF, XML, XLS, XLSX, ODS, ODT, Lotus, DIFF, SYLK, LATEX, SQL, DBF, Access!
okTotal Excel Converter can combine several Excel spread sheets into one TIFF or PDF file.
okWant to quickly find a file? Total Excel Converter helps you to preview any document you select.
okAdd your logo or any other image to the header or the footer of the output file.
okWant more order? Add page counters or a date to every page of the output files. Sequential numbering of several folders is avaialble.
okTotal Excel Converter can copy original time stamps if you want to keep them.
okWhen you convert Excel to PDF you can set user permissions, password-protect your files or sign with a digital signature. Get PDF, PDF/A and non-searchable PDFs.
okTotal Excel Converter can be run via command line (get the ready-to-use command line from GUI).

How to convert WK3 to XLSX?

1

Upload Your File: Go to the site, click on «Upload File,» and select your WK3 file.

2

Set Conversion Options: Choose XLSX as the output format and adjust any additional options if needed.

3

Convert and Download: Click «Download Converted File» to get your XLSX file.

Cloud Icon
Cloud Based
There is no need to install any software to convert WK3 to XLSX with CoolUtils. Simply access the internet, and you can easily convert your file online with our service.
Cloud Icon
Secure
Our hardware operates in top-tier, highly secure data centers equipped with advanced electronic surveillance and multi-factor access control systems.
Cloud Icon
Ease of Use
Converting from WK3 to XLSX has never been so simple. Our intuitive interface lets you convert files in just a few clicks.
Cloud Icon
Privacy
We understand the importance of privacy, which is why we've developed a comprehensive privacy policy detailing how we handle your files and personal information. You can read the policy here.

 

WK3 File

File extension .WK3
Category File
DescriptionWK3 is a legacy spreadsheet format used in Lotus 1-2-3. It supported basic tabular structure, formulas, and charts in DOS/Windows.
Associated programsLotus 1-2-3, Microsoft Excel (old version), LibreOffice Calc
Developed byLotus Software (IBM)
MIME typeapplication/vnd.lotus-1-2-3
Useful linkshttps://www.file-extensions.org/wk3-file-extension
More detailed information on WK3 files
Conversion typeWK3 to XLSX

XLSX File

File extension .XLSX, .EXCEL
CategoryDocument File
DescriptionXLSX is a format from Office Open XML family, a native MS Excel file type starting from version 2007. As opposite to XLS, this format uses ZIP compression that makes XLSX files smaller in size. Actually XLSX file is an archive of XML-documents. The cells in XLSX table can contain plain text, formulas or graphic elements. XLSX can be read in MS Office 2007 and later, Universal Viewer, OpenOffice, MS Office Excel Viewer, Corel WordPerfect Office. This format doesn’t support macros.
Associated programsMicrosoft Excel 2007
OpenOffice
OxygenOffice Progessional (Linux)
Developed byMicrosoft
MIME type
Useful linksMore detailed information on XLSX files
Rating WK3 to XLSX   5 star WK3 to XLSX   4.9 (1883 votes)
Rate It

 

 

FAQ ▼

How do I convert a WK3 to XLSX for free?

To convert WK3 to XLSX for free using Coolutils, simply upload your file on our website, select XLSX as your output format, and click "Convert." Our service offers a limited number of free conversions per day without registration.

How do I save an WK3 as a XLSX?

To save your WK3 as a XLSX with Coolutils, upload your file, choose XLSX from the dropdown menu of available formats, adjust any settings if needed, and click "Convert." Once conversion is complete, download your new XLSX file directly to your device.

How do I open a WK3 file?

If you don't have software to open a WK3 file, Coolutils can help. Convert it to a more accessible format like PDF or DOCX using our online converter. Simply upload your WK3 file, select your preferred output format, and convert it for immediate viewing.

Is it safe to convert my files online?

Yes, converting files with Coolutils is safe. We use secure HTTPS connections, automatically delete all uploaded files within 24 hours, and never share your documents with third parties. For sensitive information, we also offer offline converter solutions.

Can I convert files using my mobile device?

Absolutely! Coolutils is fully compatible with mobile devices. Our responsive website works on smartphones and tablets running iOS or Android. Simply visit our website through your mobile browser, upload your file, select the desired output format, and convert it—no app installation required.
Feature Online Converters CoolUtils Desktop Excel Built-in Other Software
Batch Conversion Limited ✅ Unlimited Manual only Limited
File Size Limit 1-5MB ✅ No limits System dependent Varies
Privacy & Security Upload required ✅ 100% offline ✅ Local only Varies
Conversion Speed Internet dependent ✅ Fast local processing Slow Medium
Advanced Options Basic ✅ Full customization Limited Basic
Cost Free/Premium One-time purchase Requires Office Subscription
Formatting Preservation Good ✅ Excellent Good Varies
Multiple Formats Support Limited ✅ 40+ formats Few formats Limited

Convert to XLSX

Using CoolUtils, it is possible to convert a variety of other formats to XLSX files:

                                                                                                 

Copyright 2003-2025 CoolUtils Development. All rights reserved.