Kelvin - Wikipedia
The kelvin was formally added to the International System of Units in 1954, defining 273.16 K to be the temperature of the triple point of water.
Kelvin to Celsius | K to °C - Calculator Soup
Aug 1, 2025 · °C equals K minus 273.15. For example, to convert 300 Kelvin to degrees Celsius, we plug our numbers into the formula as shown below: 300 Kelvin is equal to 26.85 degrees Celsius. …
Kelvin to Celsius conversion: K to °C calculator
At absolute zero, 0 Kelvin (0K) or -273.15 degrees Celsius, the temperature is at the lowest possible point anything can possibly be. At this temperature the kinetic energy of atoms and molecules is zero …
Kelvin (K) | Definition & Facts | Britannica
Nov 6, 2025 · Kelvin, base unit of thermodynamic temperature measurement in the International System of Units (SI). It is the fundamental unit of the Kelvin scale and has as its zero point absolute zero …
Kelvin: Introduction | NIST
May 14, 2018 · That is a valuable common reference because, for a precise formulation of water at a specific pressure, the triple point always occurs at exactly the same temperature: 273.16 K.
Kelvin Explained
Extrapolation of this law suggested that a gas cooled to about −273 °C would occupy zero volume. In 1848, William Thomson, who was later ennobled as Lord Kelvin, published a paper On an Absolute …
Convert Kelvin to Celsius - Unit Converter
It is also the unit of the Kelvin scale in which the null point (0 K) is the temperature at which all thermal motion ceases, known as absolute zero, or -273.15°C.