Fahrenheit to Kelvin Converter

Fahrenheit (°F) is a temperature scale where 32°F is the freezing point of water and 212°F is the boiling point of water at standard atmospheric pressure. The scale uses 180 degrees between these two reference points.

The Fahrenheit scale was developed by German physicist Daniel Gabriel Fahrenheit in 1724. He originally set 0°F as the temperature of a mixture of ice, water, and ammonium chloride, and 96°F as human body temperature. The scale was later refined to use water's freezing and boiling points as reference.

Fahrenheit is primarily used in the United States, Belize, and a few Caribbean nations for weather reporting, cooking, and everyday temperature measurements. It remains the standard for medical thermometers, household thermostats, and weather forecasts in these countries, though scientific applications typically use Celsius or Kelvin.

Kelvin (K) is the base unit of thermodynamic temperature in the International System of Units (SI). It is an absolute temperature scale where 0 K represents absolute zero, the theoretical point where all molecular motion ceases.

The Kelvin scale was developed by British physicist William Thomson, 1st Baron Kelvin, in 1848. It was based on the Celsius scale but shifted to start at absolute zero (-273.15°C). In 2019, the kelvin was redefined using the Boltzmann constant, making it more precise and fundamental.

Kelvin is the standard temperature unit in scientific research, particularly in physics, chemistry, and astronomy. It's used in thermodynamics, quantum mechanics, stellar astronomy, and any scientific work requiring absolute temperature measurements. It's essential for gas laws and thermal physics calculations.