Fortunately, Excel provides built-in features that allow you to hide and password-protect your worksheets without requiring any programming skills. Password Protecting Excel Spreadsheet Data ...

Here is a tutorial to lock or hide only the formula cells in an Excel workbook. You can also lock formulas in all worksheets in a workbook.

To hide the column that contains the full Social Security numbers, highlight the column, click Format, Column, Hide . Now the final step is to password protect the worksheet so the formula is both ...