What Lotus formats are supported?

WK1 (Lotus 1-2-3 v2) and WK3 (Lotus 1-2-3 v3) are supported. WK4 may work with reduced fidelity.

Lotus 1-2-3 to Excel Converter

Convert legacy Lotus 1-2-3 .wk1 and .wk3 spreadsheets to modern Excel XLSX.

Secure & Private

Fast Processing

No Installation Required

or drop files here

Files stay private. Automatically deleted after 2 hours.

How to Lotus 1-2-3 to Excel Converter

Upload your .wk1 or .wk3 Lotus 1-2-3 file.

Data and formulas are extracted and converted.

Download the modern Excel file.

Features

Legacy Format Recovery

Data & Formula Extraction

Modern XLSX Output

Free & Secure

When to use Lotus 1-2-3 to Excel Converter

Lotus 1-2-3 to Excel Converter helps analysts, operations teams, developers, and finance teams. Use it when you need to turn WK1 files into XLSX output, prepare a cleaner sharing copy, or finish a document workflow without installing desktop software.