WKS to XLSX Converter
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What is a WKS file?
WKS is a spreadsheet format originally used by Lotus 1-2-3 and later by Microsoft Works. It contains rows and columns of data, formulas, and simple formatting.
This format is now considered obsolete, but older WKS files can still be accessed through legacy software or converted for use in modern spreadsheet programs like Excel or LibreOffice Calc.
How to open WKS files
WKS files can be opened using older versions of Microsoft Works or Lotus 1-2-3. Some modern spreadsheet tools like LibreOffice Calc and Microsoft Excel may support legacy WKS files.
You can also convert WKS to XLS or ODS using AnyConv for better compatibility with current applications.
Key facts about WKS
- Full name: Lotus/Microsoft Works Spreadsheet
- Extension: .wks
- MIME type: application/vnd.ms-works
- Developed by: Lotus / Microsoft
- Initial release: 1985
Useful links and resources
What is a XLSX file?
XLSX is the default spreadsheet format used by Microsoft Excel since Office 2007. It is based on the Open XML standard and stores data in cells organized by rows and columns.
XLSX files support formulas, charts, formatting, and large data sets. They are widely used for financial modeling, data analysis, and record keeping across industries.
How to open XLSX files
XLSX files can be opened with Microsoft Excel, Google Sheets, LibreOffice Calc, and many other spreadsheet applications. They are the standard format for spreadsheets today.
You can convert XLSX to PDF, CSV, or XLS using AnyConv or via built-in export options in Excel and other tools.
Key facts about XLSX
- Full name: Microsoft Excel Open XML Spreadsheet
- Extension: .xlsx
- MIME type: application/vnd.openxmlformats-officedocument.spreadsheetml.sheet
- Developed by: Microsoft
- Initial release: 2007
Useful links and resources
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❓ Frequently Asked Questions
- Do I need to register to convert WKS files?Not at all! You can convert WKS to XLSX without signing up or installing anything.
- Is it safe to convert WKS to XLSX on AnyConv?Absolutely. All WKS and XLSX files are securely handled and automatically deleted after 1 hour. Nobody can access your data.
- Will the quality change after converting WKS to XLSX?We do our best to preserve the original quality during WKS to XLSX conversion. The result is accurate and clean.
- How long does it take to convert WKS to XLSX?Most conversions from WKS to XLSX take just a few seconds — even for larger files.
- Can I upload more than one WKS file?Yes, batch conversion is supported. You can convert multiple WKS files to XLSX at once — fast and easy.
- What browsers support WKS to XLSX conversion?All modern browsers! Chrome, Firefox, Safari, Edge — AnyConv runs online and supports converting WKS to XLSX on any platform.