Fahrenheit to Kelvin

Fahrenheit Scale

The Fahrenheit scale is a temperature scale based on one proposed in 1724 by the physicist Daniel Gabriel Fahrenheit. It uses the degree Fahrenheit (symbol: °F) as the unit. On the Fahrenheit scale, the freezing point of water is 32°F and the boiling point is 212°F (at standard atmospheric pressure).

The Fahrenheit scale was the primary temperature standard for climatic, industrial and medical purposes in most English-speaking countries until the 1960s when it was replaced by the Celsius scale in widespread use as part of the metrication process.

Kelvin Scale

The Kelvin scale is an absolute thermodynamic temperature scale, meaning it uses absolute zero as its null point. It is named after the Belfast-born Glasgow University engineer and physicist William Thomson, 1st Baron Kelvin.

The kelvin (symbol: K) is the base unit of temperature in the International System of Units (SI). Unlike the degree Fahrenheit and degree Celsius, the kelvin is not referred to or written as a degree. The kelvin is the primary unit of temperature measurement in the physical sciences.

Absolute zero, the coldest possible temperature, is exactly 0 K and −273.15°C or −459.67°F.