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.

If you are unfamiliar with inputting formulas into Microsoft Excel, the much simpler way to get the number of unique values in an Excel column is through a filter.

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.

How to highlight values Excel has a built-in conditional rule that highlights unique values. You don’t have to come up with a special formula—you just run though a few clicks.

How to Use Excel to Show Only Duplicate Values. Business issues such as incorrect transactions, data entry errors, technical glitches and poor system design may cause duplicate values in your data ...

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.

The article, How to highlight unique values in Excel, shows two easy ways to apply conditional formatting to unique values or the row that contains a unique value.