Select the cell that contains the value 65 and hold down the key.(Start with 97 if you want lowercase letters.) Enter the value 65 in any cell - CHAR(65) will return A.First, let's tackle the list of integers that the CHAR() function will use as its arguments. You can use the CHAR() function to produce the appropriate letters, but this function uses integer as an argument - you can use the fill handle to produce both. Then, select the cells that contain the letters and use the fill handle to copy the entire alphabet as many times as required. Fortunately, there are three workarounds for forcing the fill handle to produce the list. For instance, if you enter A, B, and C, in adjacent cells and then use the fill handle to fill in the rest, it just copies A, B, and C, over and over.
If you've tried to create an alphabetic list using Excel's fill handle, you already know that the fill handle can't handle the task.