Unique values

Unique values are values existing only once in a list or range. See picture below.

Count unique values in two lists combined

Array formula in D12:

=SUM(IF(COUNTIF(List1, List1)+COUNTIF(List2, List1)=1, 1))+SUM(IF(COUNTIF(List2, List2)+COUNTIF(List1, List2)=1, 1)) + CTRL + SHIFT + ENTER

Named ranges
List1 (B3:B8)
List2 (D3:D7)
What is named ranges?

How to customize the formula to your excel workbook
Change the named ranges.

Download excel example file
Count-unique-values-in-two-columns.xls
(Excel 97-2003 Workbook *.xls)

Functions used in this blog post:

COUNTIF(range,criteria)
Counts the number of cells within a range that meet the given condition

IF(logical_test;[value_if:true];[value_if_false])
Checks whether a condition is met, and returns one value if TRUE, and another value if FALSE

SUM(number1,[number2],)
Adds all the numbers in a range of cells

Read more related articles

Related posts:

1. Count unique distinct values in three columns combined in excel
2. Count matching cell values in two columns in excel
3. Count unique values and unique distinct values in three ranges combined in excel
4. Count unique values and unique distinct values in two ranges combined
5. Count unique distinct values in two columns in excel
6. Comparing two columns and sum unique values using array formula in excel
7. Count unique distinct values in two columns with date criteria in excel
8. Count unique distinct values in a column in excel
9. Highlight common values in two lists using conditional formatting in excel
10. Filter duplicates from two columns combined and sort from A to Z using array formula in excel