Excel will eliminate duplicate entries, leaving unique values. This method might remove duplicates in your data that you'd like to keep, so if this happens, consider manually deleting the data ...

Fortunately, Excel offers several built-in features that make it easy to identify and remove duplicate values, helping you ensure your data is clean and accurate.

To begin, select the column or specific data range you want to clean up. Once you have made your selection, navigate to the Data tab on the Excel ribbon and locate the “Remove Duplicates” feature.