Step 1
Locate the Lotus .123 file that you wish to open. If it has a “.123” appendage, you need to rename it to have a “.wk4” appendage. This will allow Excel to read the file.

Step 2
Right click the Lotus 123 (.wk4) file.

Select “Open with…” and select Microsoft Excel. Excel will open the file with all associated information and formatting. If you wish to convert to a native Excel file, merely save it, making sure to select the Excel format.