Quick summary
A calculated column in Power BI lets you extend your data table with custom values derived from a DAX expression, making it instantly available for use in reports and visuals. This walkthrough covers every step from opening a blank report to committing your formula and seeing the new column appear in your table.
Steps
- Open Power BI Desktop, go to the Home tab, and select Blank report.
- Select a data source to add data to your report.
- Click Load to import the data into Power BI.
- Click the table icon on the left panel to switch to the Data view.
- In the top ribbon, click New Column.
- A formula bar appears — write your DAX expression to define the calculated column.
- Click the check icon to commit and apply the formula.
- Power BI adds the new column to your table, ready to use in visuals.
