Even easier: take the temp in C, double it and add 32.... gets you closeI also agree that the centigrade scale is more practical. In addition to being used to the Fahrenheit scale, my main problem is the centigrade scale it is less accurate. 0 degrees C (freezing) can be anywhere between 31 and 33 degrees F. This can be critical in certain situations. When necessary, the conversion is simple: (C × 9/5) + 32 = F