Slurp Sundae
Lotus 1-2-3 Converter
Open classic Lotus spreadsheets on modern Windows
Bulk-convert legacy Lotus 1-2-3 spreadsheets to XLSX, PDF, HTML, Markdown, CSV, and XLS locally on Windows.
Lotus 1-2-3 Converter opens decades of Lotus spreadsheet formats — .123, .wk1, .wk3, .wk4, .wks, and related extensions — and exports them to formats Excel and modern tools understand. Everything runs locally on your PC.
Founder story
Green 18 Enterprises has kept Lotus-era files accessible long after the original apps disappeared. This converter is for anyone who still has .123 or .wk files sitting on a backup drive.
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