Count the number of unique values in a range [Quick Tip]

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Here is an excel formula quick tip that can come handy when you need to count the number of unique values in a range of cells.

Excel Formula to Count Number of Unique Values

count-unique-values-from-rangeAssuming we have a list of values in the range:B5:B15 and we want to know how many unique values are there,

you can write the oh so wonderful sumproduct formula like this:

SUMPRODUCT(1/COUNTIF(B5:B15,B5:B15)).

How this formula works?

The portion COUNTIF(B5:B15,B5:B15) of the formula returns the individual item counts. So in our example range, the values would be: 5,1,2,5,1,1,1,2,5,5,5. When you add up the reciprocals of these values, you will get the count of unique values in the range.

Why so?
I am leaving that to your imagination.

More unique ways to work with duplicates in your data

My obsession with unique values in excel is known to most of you. It is one topic on which I have posted alot. Here is a list of most useful techniques to work with duplicate values in your data.

Additional Resources:

If you are an Excel Formula Stud …

Take part in our twitter formula contest. All you need to do is send a tweet with a formula tip to @r1c1. We have prizes worth $230 for grabs. More details here.

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