Final answer:
To find duplicate values in two different columns in Excel, you can use the COUNTIF function.
Step-by-step explanation:
Finding duplicate values in two different columns in Excel can be done using a few different methods, such as conditional formatting, a formula, or a pivot table. Here are the steps for one common approach using a formula:
Create a new column where you want to display the results of the duplicate check.
In the first cell of this new column, enter the following formula: =COUNTIF(A:A, B1). This assumes that column A and column B contain the values you're comparing and that you're starting from the first value in column B (B1).
Drag the fill handle down the new column to apply this formula to all cells corresponding to data in column B. The result will be a number representing how many times the value in column B appears in column A.
To highlight the duplicates, you can apply conditional formatting to the cells in the new column. Choose to highlight cells with values greater than 1, indicating a duplicate in both columns.
This method will help you identify duplicates between two distinct columns. Remember, there are variations and additional methods depending on the specifics of the task at hand.