Fahrenheit
Symbol: °F
Fahrenheit is the temperature scale proposed in 1724 by, and named after, the physicist Daniel Gabriel Fahrenheit (1686-1736). Three reference points were used to fix the scale:
1.) A mixture of ice, water, and ammonium chloride, which is a frigorific mixture automatically stabilizing its temperature at 0 °F.
2.) A mixture of water and ice stabilizes at 32 °F.
3.) The level of the liquid in the thermometer when held in the mouth or under the armpit stabilizing at 96 °F.
At the today's definition on the Fahrenheit scale, the freezing point of water is 32 degrees Fahrenheit (°F) and the boiling point 212 °F (at standard atmospheric pressure), placing the boiling and freezing points of water exactly 180 degrees apart.
Kelvin can be transformed to °F as followed:
TFahrenheit=TKelvin * 1,8 - 459.67.
1°F = 255.93K
1K = -457.87°F