**SUM Function (DAX)**

**How does the SUM function (DAX) work?**

The SUM function (DAX) adds all the numbers in a column.

**SUM Formula Syntax**

SUM(

<column>

)

**How do you use the SUM function?**

This function will sum up cells that are supplied as multiple arguments. It is the most popular and widely used function in Excel.

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**Considerations when using the SUM function**

The SUM function uses the following arguments:

**Number1**(required argument) – This is the first item that we wish to sum.**Number2**(required argument) – The second item that we wish to sum.**Number3**(optional argument) – This is the third item that we wish to sum.

The function sums values supplied as arguments (up to 255 arguments). Arguments can be supplied as numbers, cell references, ranges, arrays, constants, and the results of other formulas or functions.

If you want to filter the values that you are summing, you can use the SUMX function and specify an expression to sum over.

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**Formula examples using the SUM function**

=SUM(Sales[Amt])

=SUM(C5:C10)

=SUM(D6,D8,D10)