Originally posted by BowmannYou might as well just say -40. The only temperature scales are Centigrade, Fahrenheit, Kelvin, Rankine and Réaumur (not counting this, as it is obsolete). -40K and -40°Rankine couldn't possibly exist.
What's -40C in °F?
-40°C and -40°F are the same. Of course, I am sure you knew that already. 😉