Kelvin to Celsius Converter

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.

Celsius (°C) is a temperature scale where 0°C is the freezing point of water and 100°C is the boiling point of water at standard atmospheric pressure. It is part of the metric system and widely used worldwide.

The Celsius scale was developed by Swedish astronomer Anders Celsius in 1742. Originally, he defined 0° as the boiling point and 100° as the freezing point of water, but this was later reversed. The scale was officially renamed from 'centigrade' to 'Celsius' in 1948 to honor its creator.

Celsius is the standard temperature scale used in most countries worldwide for weather reporting, cooking, medical applications, and scientific work. It's the official temperature scale in the International System of Units (SI) and is used in virtually all countries except the United States for everyday temperature measurements.