WKS to XLSX Converter
Convert your WKS Lotus 1-2-3 spreadsheet into an editable XLSX workbook for Excel and Google Sheets. Secure processing, free downloads, no account required.
Drop your WKS files here
Up to 50MB per file.
Files are encrypted and auto-deleted after conversion
How to Convert
- 101
Upload your WKS files
Drag and drop or select WKS files from your device. You can upload multiple files at once.
- 202
Configure Output
Start the conversion. Crest Convert will prepare the XLSX file using the appropriate format engine.
- 303
Download XLSX files
Once conversion finishes, download your files individually or as a compressed ZIP archive.
Why convert WKS to XLSX?
WKS is a classic Lotus 1-2-3 worksheet used for business data, calculations, tables, and spreadsheet archives. Converting it to XLSX creates the current Microsoft Excel workbook format with worksheets, formulas, and formatted cells, ready for workflows that use the destination format.
XLSX opens in Microsoft Excel, Google Sheets, Apple Numbers, and LibreOffice Calc.
Frequently Asked Questions
How do I convert WKS to XLSX?
Add your WKS spreadsheet, start the conversion, and download a genuine editable XLSX workbook ready for compatible spreadsheet apps.
What is a WKS file?
WKS is a classic Lotus 1-2-3 worksheet format used for tables, formulas, financial models, business records, and archived spreadsheet data.
What does converting WKS to XLSX do?
The converter reads the legacy Lotus worksheet and creates a genuine editable XLSX workbook ready for compatible spreadsheet apps.
Can I edit the converted XLSX file?
Yes. The converter creates a genuine XLSX file with supported cells, values, structure, and formatting ready for compatible apps.
Can I convert several WKS files?
Yes. Add multiple WKS files and download a separate XLSX result for each spreadsheet.
Is WKS to XLSX conversion secure?
Yes. Files are transferred over an encrypted connection, processed securely, and automatically removed after conversion. No account is required.