To convert from Fahrenheit to Celsius, simply subtract 32 and multiply by 0.5556 (or 5/9). Example: (75F - 32) x 0.5556 = 23.6C To convert from Celsius to Fahrenheit, just multiply by 1.8 (or 9/5 ...

Both can be easily visualized as ice and steam, but Fahrenheit has no visual cue for what the temperature is. Even the British changed their ways, mostly at least, in 1965, and the US was very ...