To add a calculated column in Power BI, follow these simple steps:
- Open your Power BI desktop, go to the 'Home' tab, and select 'Blank report'.
 - Select a data source to add data to your report.
 - Click 'Load'.
 - Click the table icon on the left panel.
 - In the top ribbon, click 'New Column'.
 - A formula bar appears where you can write your DAX expression.
 - Click the check icon to commit and apply the formula.
 - Power BI will add the new column to your table. You can now use it in visuals.
 



