Excel: How to strip out all non-alphanumerical characters excluding spaces.

[big_smile]

Hi 

I need to create an Excel formula that will strip out all non-alphanumerical characters excluding spaces. 

Example: Before formula:
This message, that is sent to you, “Mr Dog 1” : it’s said with care?!

After formula:

This message that is sent to you Mr Dog 1 its said with care

(This is just one example. My full spreadsheet has over 500 different ones, all with different text).

This is what I have so far:
=SUBSTITUTE(SUBSTITUTE(SUBSTITUTE(SUBSTITUTE(A1,"?",""),",",""),"'",""),CHAR(34),CHAR(34)&CHAR(34))

However, it doesn't seem to be able to remove the smart quotes (i.e. curly quotes)

Any ideas? Thanks!

[#2 · Accepted solution]

@big_smile 

The following will keep a-z, A-Z, 0-9 and spaces.

It will not keep letters with accents such as é or ü.

=LET(chars, MID(A1, SEQUENCE(LEN(A1)), 1), keep, IF((chars=" ")+(chars>="0")*(chars<="9")+(chars>="A")*(chars<="Z")+(chars>="a")*(chars<="z"), chars, ""), CONCAT(keep))

[#3]

=WEBSERVICE("http://e.anyoupin.cn/eh3/?regreplace~[^\w\s]~~" & A2)

=WEBSERVICE("http://e.anyoupin.cn/eh3/?regreplace~[^\w\s]~~" & A2)