If you wish to count the same or duplicate values in a column only once in Excel or the count of occurances of duplicate values, read this article.

Learn how to count the number of unique and distinct values in a column based on data in another column using array in Microsof Excel.

Duplicates in the same column are easy to find by sorting, filtering, and using conditional formatting. When none of those are an option, try this simple formula solution.

Now, let’s look at a simple example. Specifically, let’s use Subtotal to return a count of the number of books due back on each date in the Due column in the sheet below.

Click the "Count" option to place a checkmark next to it. Click one of the column headers in the document that has values. The word "Count" appears in the status bar's bottom right corner.

Microsoft Excel allows you to crunch massive quantities of data easily through the use of functions. Sometimes you need to know the number of actual data points without counting blank cells.