Quick summary
Adding a column in Microsoft Excel takes just two steps: select the column header to the right of your desired location, then use the right-click Insert option to place the new column instantly to the left.
Steps
- Click on the lettered column header to the right of where you want the new column to appear.
- Right-click on the selected column header, then click Insert from the context menu.
- A new column will be added to the left of the selected column.



