What scale is easier for people to use Fahrenheit or celsius?

Answer 1

Either - it all depends what you learnt when growing up, or have adapted to as you've grown older.

The Fahrenheit scale is almost twice the size of the Celsius scale (between freezing and boiling on Celsius there are 100 degrees, but on the Fahrenheit there are 180 degrees) meaning that smaller temperature differences show up as a larger difference with the Fahrenheit scale than with the Celsius scale.

They are just as easy as each other, though scientists prefer Kelvin which has the same unit differences as Celsius but starting with 0 K = -273.15oC (water freezes at 273.15 K and boils at 373.15 K).

The Fahrenheit scale was originally intended to be 0oF = freezing point of brine, nominally 32oF = freezing point of water and 96oF = normal body temperature, but later scientists redefined the scale slightly so that water did freezer at exactly 32o F which made body temperature 98.4oF.