Knowing how to compare two Excel files is important in any environment where many people are making changes to the same file. This is common in a corporate environment or when Excel files are shared in the cloud where many people have access to make changes.

Fortunately, there are a number of ways to compare two Excel files. In some cases, you can merge the changes made in two different Excel files into a single file.

If you have two Excel files with multiple worksheets, the easiest approach is to perform a full worksheet comparison using third-party tools.

There are a few tools online that will help you compare Excel files, but there are also a few that you can use for free. One of them is Spreadsheet Compare, available from SourceForge.