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.

Specifying the conditional count of a value sounds like a daunting task, but two Excel functions make quick work of this challenge.

If you want duplicate values to stand out in an Excel spreadsheet, you can choose between two conditional formatting rules.

You can count the number of values in a single cell in Excel and Google Sheets that are seperated by comma using this function or formula.