select the cells that you want to convert,click copy,select the upper left cell
of the paste area,the paste area must be out side of the copied area, click the
arrow to the right of the paste and then click transpose your columns will be
convert into rows.
Copy your data and paste it by right-clicking and selecting Paste Special. Select "Transpose" and hit OK to paste your data. This only works in Excel 2000 or more recent, however.
If you have data in columns and you want to change that into row just select the data and copy then go to the row where you want the info and right click, select paste special and select transpose option and click OK that will change columns into rows
To transpose from a Column into a Row. To transpose the values in Column A (List1) into a Row:
Using the INDEX and COLUMN functions, enter the following formula in cell C2, and then copy it across the next 3 cells in the row.
One must, copy the data in the source column first. Then right click in the row, and click paste special. On the paste special dialog box choose, all, none, and transpose.