The LOWER function in Power BI is a Text function used to convert a given text string to lowercase.
It’s particularly useful for standardizing text for comparisons or display purposes. It comes under Text function Dax category.
Syntax:
LOWER(string)
Description:
S no. | Parameter | Description |
1 | String | The text you want convert into lowercase. |
Let’s begin with an illustrative example:
Step-1: Sample Dataset as below:

Sample Dataset for DAX String Functions
Step-2: Create a new column, right-click on the dataset and select “New Column.”

Create New Column
Step-3: After that DAX formula screen appears.
Step-4: Write the following DAX formula to convert the strings in the “Product Subcategory” column to lowercase, and then press Enter.
LowerCase = LOWER(Orders[Product Sub-Category])
Step-5: Now Drag new column to Table visual & output as below.

Lower function Output
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