Concatenate two Excel Columns with a Character or String

To concatenate (or join) two columns A2 and B2 into C2 with a hypen (in this case), use this formula in C2:

=A2&"-"&B2

Then copy the results down the column with click and drag downwards to duplicate the formula on the cell. Finally, copy column C and paste special into the target column as values only.

Reference: http://www.pcmag.com/article2/0,2817,33100,00.asp