Check if cell contains Non-Alpha characters in Excel

Question

Is there a Non-VBA way to check Col B and Col C to see if they contains any characters that are Non-Alpha? Just to clarify by Non-Alpha I mean anything not part of the alphabet(case insensitive).

Col B and Col C is a list of First and Last Names. Some of these names have symbols or numbers in them through bad data entry. I am trying to find all the ones that need to be fixed. So I need to find the ones that contain ANYTHING that is not a letter.

Answer 1

There is a "weird" but simple and generic answer.

=SUMPRODUCT(SEARCH(MID(A1,ROW(INDIRECT("1:"&LEN(A1))),1),"abcdefghijklmnopqrstuvwxyz"))

• This formula returns #VALUE! error if A1 contains any non-letter characters, number if A1 contains only letters, or #REF! error if A1 is blank.

• You can enclose this formula in an ISNUMBER or ISERR to convert this to a TRUE/FALSE value.

• Replace the SEARCH with a FIND to make it case sensitive.

• You can put any character in the "abc...xyz" string. This makes it easy to test of alphanumeric, or common punctuations, etc.

The "1:"&LEN(A1) means that starting from the first letter, all the way to the last letter will be checked. Changing that to "2:"&(LEN(A1)-1) will not check the first and last letters.

Answer 2

You can use 26 nested SUBSTITUTEs to remove all alphabetic characters from the text.

If anything is left over, the cell contains non-alpha characters.

And thanks to @RaGe for pointing out that you need to check for empty cells as well:

=AND(ISTEXT(A2),SUBSTITUTE(SUBSTITUTE(SUBSTITUTE(SUBSTITUTE(SUBSTITUTE(SUBSTITUTE(SUBSTITUTE(SUBSTITUTE(SUBSTITUTE(SUBSTITUTE(SUBSTITUTE(SUBSTITUTE(SUBSTITUTE(SUBSTITUTE(SUBSTITUTE(SUBSTITUTE(SUBSTITUTE(SUBSTITUTE(SUBSTITUTE(SUBSTITUTE(SUBSTITUTE(SUBSTITUTE(SUBSTITUTE(SUBSTITUTE(SUBSTITUTE(SUBSTITUTE(LOWER(A2),"a",),"b",),"c",),"d",),"e",),"f",),"g",),"h",),"i",),"j",),"k",),"l",),"m",),"n",),"o",),"p",),"q",),"r",),"s",),"t",),"u",),"v",),"w",),"x",),"y",),"z",) = "")