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# (Excel examples for Beginners)

In this end-to-end excel example, you will learn – Excel formula for Beginners – How to Sum columns based on adjacent criteria in Excel.

# Excel formula for Beginners – How to Sum columns based on adjacent criteria in Excel

### Generic formula

=SUMPRODUCT(--(range1=criteria),range2)

### Explanation

To sum or subtotal columns based on criteria in adjacent columns, you can use a formula based on the SUMPRODUCT function. In the example shown, the formula in J5 is:

=SUMPRODUCT(--($B5:$H5=J$4),$C5:$I5)

### How this formula works

At the core, this formula uses SUMPRODUCT to multiply then sum products of two arrays: **array1** and **array2**. The first array, **array1** is set up to act as a “filter” to allow only values that meet criteria.

**Array1** uses a range that begins on the first column that contains values that must pass criteria. These “criteria values” sit in a column to the left of, and immediately adjacent to, the “data values”.

The criteria is applied as a simple test that creates an array of TRUE and FALSE values:

--($B5:$H5=J$4)

This bit of the formula “tests” each value in the first array using the criteria supplied, then uses a double-negative (–) to coerce the resulting TRUE and FALSE values to 1’s and 0’s. The result looks like this:

{1,0,0,0,1,0,1}

Note that 1s correspond to columns 1,5, and 7, which meet the criteria of “A”.

For **array2** inside of SUMPRODUCT, we use a range that is “shifted” by one column to the right. This range starts with the first column contain values to sum and ends with the last column that contains values to sum.

So, in the example formula in J5, after the arrays have been populated, we have:

=SUMPRODUCT({1,0,0,0,1,0,1},{1,"B",1,"A",1,"A",1})

Since SUMPRODUCT is programmed specifically to ignore the errors that result from multiplying text values, the final array looks like this:

{1,0,0,0,1,0,1}

Disclaimer: The information and code presented within this recipe/tutorial is only for educational and coaching purposes for beginners and developers. Anyone can practice and apply the recipe/tutorial presented here, but the reader is taking full responsibility for his/her actions. The author (content curator) of this recipe (code / program) has made every effort to ensure the accuracy of the information was correct at time of publication. The author (content curator) does not assume and hereby disclaims any liability to any party for any loss, damage, or disruption caused by errors or omissions, whether such errors or omissions result from accident, negligence, or any other cause.The information presented here could also be found in public knowledge domains.

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