From Lotus 123
1. Open your file in Lotus 123.
2. Go to the 'File' menu, select 'Save As,' and save it as a Microsoft 97 file (*.xls).
3. Open the resulting .xls file in Excel.
From Excel
4. Open Excel.
5. Locate the Lotus 123 file (with an extension of *.wk4 in most cases).
6. Click 'Open.' Excel will prompt you for approval before converting the file.
7. Go to the 'File' menu, and select 'Save As' to save a copy of the file as an Excel native format.