How to extract ad sizes from a string with excel regex

Question

I am trying to extract ad sizes from string. The ad sizes are all set standard sizes. So while I\'d prefer to have a regex that looks for a pattern, IE 3 numbers followed by 2 o

Answer 1

This formula could work if it's always 3 characters, then x, and it's always between underscores - adjust accordingly.

=iferror(mid(A1,search("_???x*_",A1)+1,search("_",A1,search("_???x*_",A1)+1)-(search("_???x*_",A1)+1)),"No match")