Count Unique values based on multiple columns

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This tutorial explains how to count unique values based on multiple columns in Excel.

Sample Data
Sample Data
The combination 1 and Jhonson appears 2 times so the unique value would be equal to  (1/2) + (1/2) = 1
How Formula Works

COUNTIFS counts the number of times the values appear based on multiple criteria.
COUNTIFS Formula Evaluation
Then all the values are divided by 1 and SUMPRODUCT sums all the fraction values.

Count Unique Values (More than 2 columns)
Sample Data

Related Articles
1. 3 Ways to extract unique values
2. Count Unique values in a column
3. Select and Count Duplicate values in Excel
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