Find Duplicate Values in one Column

Dpres

I looked and cannot find a solution, I have employees who are signing up for a course and some are doing multiples for various reasons (not all legitimate) and I would like to find out how to see who has multiple entries so I can delete the ones that should not be duplicated like with excel where I can highlight but realize I will need a formula and a separate column.

I tried the =COUNTIF([Employee Email]:[Employee Email],[Employee Email]1,>1) and it shows 0 even for the ones that are duplicates.

Thank you

Carson Penticuff

If you set this as a column formula in your helper column, it will return the number of times each email is duplicated. You could also setup conditional formatting to highlight that row if the result is greater than 1.

=COUNTIFS([Employee Email]:[Employee Email], [Employee Email]@row)

Carson Penticuff

If you set this as a column formula in your helper column, it will return the number of times each email is duplicated. You could also setup conditional formatting to highlight that row if the result is greater than 1.

=COUNTIFS([Employee Email]:[Employee Email], [Employee Email]@row)

Dpres

@Carson Penticuff Thank you so much! Worked great!