How to compare two columns in excel for duplicates

When you’re working with data in Excel, sooner or later you will have to compare data. This could be comparing two columns or even data in different sheets/workbooks.

In this Excel tutorial, I will show you different methods to compare two columns in Excel and look for matches or differences.

There are multiple ways to do this in Excel and in this tutorial I will show you some of these (such as comparing using VLOOKUP formula or IF formula or Conditional formatting).

So let’s get started!

Compare Two Columns (Side by Side)

This is the most basic type of comparison where you need to compare a cell in one column with the cell in the same row in another column.

Suppose you have a dataset as shown below and you simply want to check whether the value in column A in a specific cell is the same (or different) when compared with the value in the adjacent cell.

Of course, you can do this when you have a small dataset when you have a large one, you can use a simple comparison formula to get this done.

And remember, there is always a chance of human error when you do t

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