You can insert a degree symbol (among many other symbols) by using the Special Characters menu, which is now called the Emoji & Symbols menu in more recent versions of macOS, including macOS Mojave. Degree Symbol from the Special Characters Menu
There are two ways to type a degree symbol in macOS, and they’re both system-level functions, meaning that they’ll work in any application on your Mac at virtually any time (with some exceptions for secure text entry fields).īut don’t worry, all of the most common applications in which you’d want to type a degree symbol are supported, including Web browsers, macOS Messages, Skype, Mail clients, and even journaling apps like the popular Day One.