That confused me, too: You have to know for yourself what units (F or C) you use in the text field, and then, only one of the two labels (CtF or FtC) is relevant for your answer. Still, I learned something here - and I'm very grateful that Kindson took the time to explain web services in a simple example!
Now you can use this (2021) as currently SOAP is not much used. REST almost replaced it ru-vid.com/video/%D0%B2%D0%B8%D0%B4%D0%B5%D0%BE-aeiaSWE36EY.html
when i run convert.asmx, the website to communicate error ( HTTP Error 500.19 - Internal Server Error The requested page cannot be accessed because the related configuration data for the page is invalid), somebody tell me why, please!!!