Convert from degree Fahrenheit to Kelvin

Unit Definition (degree Fahrenheit)
Degrees Fahrenheit is a common unit of temperature still widely used today. The unit was defined by the German physicist Daniel Fahrenheit. Fahrenheit set 0° at the coldest temperature he could conveniently achieve using an ice and salt mixture, and it is said he intended to set 96°F as the temperature of the human body. On his scale, the freezing point of water (at 1atm.) turned out to be ~32°F and the boiling point ~212°F. Eventually the scale was precisely defined by these two temperatures.

Unit Definition (Kelvin)
The Kelvin is the SI base unit of temperature. It was previously called the degree Kelvin (°K). The unit size of Kelvin and degrees Celsius are the same, however the two are offset by ~273°. The temperature in Kelvins is always equal to 273.15 plus the temperature in degrees Celsius. The Kelvin equals exactly 1.8 degrees Fahrenheit.