You can use the following syntax in DAX to calculate the sum of values in a column:

Sum Points = SUM('my_data'[Points])

This particular example creates a new measure named **Sum Points** that calculates the sum of values in the **Points** column of the table named **my_data**.

The following example shows how to calculate the sum of values in a column in Power BI in practice.

**Example: How to Calculate Sum in Power BI**

Suppose we have the following table in Power BI named **my_data** that contains information about points scored by basketball players on various teams:

Suppose we would like to calculate the sum of values in the **Points** column.

To do so, click the **Table tools** tab along the top ribbon, then click the **New measure **icon:

Then type in the following formula into the formula bar:

Sum Points = SUM('my_data'[Points])

This will create a new measure named **Sum Points **that contains the sum of values in the **Points** column of the table:

If we’d like, we can display this value by going to the **Report View** in Power BI, then by clicking the **Card** icon under the **Visualizations** tab, then by dragging the **Sum Points** measure under the **Fields** label:

This will produce the following card that displays the sum of values in the **Points** column of the table:

We can see that the sum of all values in the **Points** column is **219**.

**Additional Resources**

The following tutorials explain how to perform other common tasks in Power BI:

How to Count Number of Occurrences in Power BI

How to Calculate Standard Deviation in Power BI

How to Calculate a Cumulative Sum in Power BI