The Fahrenheit temperature scale (developed in 1724 by Daniel Gabriel Fahrenheit) was established using three reference points of temperature: a frigorific mixture of ice, water, and ammonium chloride, for 0°; an equilibrium mixture of ice and water, for 32°; and the average human body temperature, initially 96° (approximately).

At one standard atmosphere of pressure, water melts/freezes at 32°F and vaporizes/condenses at 212°F.

Fahrenheit is related to the Kelvin scale by the following formulas:

Fahrenheit is related to the Celsius scale by the following formulas:

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• Fahrenheit temperature scale
• Daniel Gabriel Fahrenheit
• Frigorific mixture