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## How to count unique values based on another column in Excel?

Author: XiaoyangLast Modified: 2020-05-08

It may be common for us to count unique values in only one column, but, in this article, I will talk about how to count unique values based on another column. For example, I have the following two columns data, now, I need count the unique names in column B based on the content of column A to get the following result:

Count unique values based on another column with array formula

#### Count unique values based on another column with array formula

To solve this problem, the following formula can help you, please do as follows:

1. Enter this formula: =SUMPRODUCT(((\$A\$2:\$A\$18=D2))/COUNTIFS(\$A\$2:\$A\$18,\$A\$2:\$A\$18&"",\$B\$2:\$B\$18,\$B\$2:\$B\$18&""))into a blank cell where you want to put the result, E2, for instance. And then press Ctrl + Shift + Enter keys together to get the correct result, see screenshot:

Note: In the above formula: A2:A18 is the column data that you count the unique values based on, B2:B18 is the column that you want to count the unique values, D2 contains the criteria that you count unique based on.

2. Then drag the fill handle down to get the unique values of the corresponding criteria. See screenshot:

Related articles:

How to count the number of unique values in a range in Excel?

How to count unique values in a filtered column in Excel?

How to count same or duplicate values only once in a column?

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Comments(20)
This comment was minimized by the moderator on the site
Hi, thanks for this formula, I'm having an issue implementing it across two Worksheets. In my example, your columns A and B are on one sheet, and D and E are on another, which collects similar data from other year-based Sheets. If I put the formula on the sheet where D (Area) and E are, in E it just returns a zero =SUMPRODUCT(((MHST2324[@Team]=[@Area]))/COUNTIFS(MHST2324[@Team],MHST2324[@Team]&"",MHST2324[@School],MHST2324[@School]&"")). However if I put the formula on the Sheet where A (Team) and B (School) are, it works =SUMPRODUCT((([@Team]=Schools[Area]))/COUNTIFS([@Team],[@Team]&"",[@School],[@School]&"")), any ideas as to why?
This comment was minimized by the moderator on the site
Hey, thanks for this formula, I'm having a problem where
This comment was minimized by the moderator on the site
Классная формула, но как сделать чтобы в столбец A и B можно было постоянно добавлять и не менять формулу ? закрепить не диапазон а столбцы
This comment was minimized by the moderator on the site
Hello, DM,
In fact, you can enlarg the cell references as you need. For example:
=SUMPRODUCT(((\$A\$2:\$A\$10000=D2))/COUNTIFS(\$A\$2:\$A\$10000,\$A\$2:\$A\$10000&"",\$B\$2:\$B\$10000,\$B\$2:\$B\$10000&""))
Please remeber to press Ctrl + Shift + Enter keys together.
Please have a try, hope it can help you!
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