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.

The easiest way to spot a unique value is to format it, and Microsoft Excel offers two ways to do so.

Excel’s UNIQUE function allows users to extract unique values from a dataset, making it easier to identify and remove duplicates.

When counting unique values in Microsoft Excel, use UNIQUE() as a helper function and avoid more complicated expressions.

Matching One Column Data with Another in Excel. If you don't have a keen eye and a perfect memory, you probably can't spot all the differences between two data columns in a large worksheet.

If one of the rows in a one-column data set contains "cat" and the other contains "Cat" in the same column, Excel considers the values to be unique.

You can search in Excel with the Search Sheet bar, and use Find and Replace to swap out terms or values. Here's how to do it.

Click on the Data tab. Then, click Remove Duplicates. Select the columns that might have copies in the dialog box and press OK. Excel will eliminate duplicate entries, leaving unique values.