123 to XLSX Converter
Convert your 123 Lotus 1-2-3 spreadsheet into an editable XLSX workbook for Excel and Google Sheets. Secure processing, free downloads, no account required.
Drop your 123 files here
Up to 50MB per file.
Files are encrypted and auto-deleted after conversion
How to Convert
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Upload your 123 files
Drag and drop or select 123 files from your device. You can upload multiple files at once.
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Configure Output
Start the conversion. Crest Convert will prepare the XLSX file using the appropriate format engine.
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Download XLSX files
Once conversion finishes, download your files individually or as a compressed ZIP archive.
Why convert 123 to XLSX?
123 is a Lotus 1-2-3 spreadsheet used for financial models, business records, tables, and archived workbook data. 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 123 to XLSX?
Add your 123 spreadsheet, start the conversion, and download a genuine editable XLSX workbook ready for compatible spreadsheet apps.
What is a 123 file?
123 is a later Lotus 1-2-3 workbook format used for tables, formulas, financial models, business records, and archived spreadsheet data.
What does converting 123 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 123 files?
Yes. Add multiple 123 files and download a separate XLSX result for each spreadsheet.
Is 123 to XLSX conversion secure?
Yes. Files are transferred over an encrypted connection, processed securely, and automatically removed after conversion. No account is required.