Celsius to Kelvin - °C to K

How to convert from Celsius to Kelvin

0 degrees Celsius is equal to 273.15 degrees Kelvin:

0 °C = 273.15 K

The temperature T in Kelvin (K) is equal to the temperature T in degrees Celsius (°C) plus 273.15. To convert from Celsius to Kelvin we can use the formula below:

T(K) = T(°C) + 273.15

Definition of units

Let's see how both units in this conversion are defined, in this case Celsius and Kelvin:

Celsius (°C)

The Celsius scale, also known as the centigrade scale, is an SI scale and unit of measurement for temperature. As an SI derived unit, it is used by most countries in the world. It is named after the Swedish astronomer Anders Celsius (1701–1744), who developed a similar temperature scale. The degree Celsius (symbol: °C) can refer to a specific temperature on the Celsius scale as well as a unit to indicate a temperature interval, a difference between two temperatures or an uncertainty. Before being renamed to honour Anders Celsius in 1948, the unit was called centigrade, from the Latin centum, which means 100, and gradus, which means steps. The Celsius scale was based on 0 °C for the freezing point of water and 100 °C for the boiling point of water at 1 atm pressure following a change introduced in 1743 by Jean-Pierre Christin to reverse the Celsius thermometer scale (from water boiling at 0 degrees and ice melting at 100 degrees).

Kelvin (K)

The Kelvin scale is an absolute thermodynamic temperature scale using as its null point absolute zero, the temperature at which all thermal motion ceases in the classical description of thermodynamics. The kelvin (symbol: K) is the base unit of temperature in the International System of Units (SI). The kelvin is defined as the fraction  1⁄273.16 of the thermodynamic temperature of the triple point of water (exactly 0.01 °C or 32.018 °F). In other words, it is defined such that the triple point of water is exactly 273.16 K. The Kelvin scale is named after the Belfast-born, Glasgow University engineer and physicist William Thomson, 1st Baron Kelvin (1824–1907), who wrote of the need for an "absolute thermometric scale". Unlike the degree Fahrenheit and degree Celsius, the kelvin is not referred to or typeset as a degree. The kelvin is the primary unit of temperature measurement in the physical sciences, but is often used in conjunction with the degree Celsius, which has the same magnitude. The definition implies that absolute zero (0 K) is equivalent to −273.15 °C (−459.67 °F).

Celsius to Kelvin conversion table

Below is the conversion table you can use to convert from Celsius to Kelvin

Celsius (°C) Kelvin (K)
1 Celsius 274.15 Kelvin
2 Celsius 275.15 Kelvin
3 Celsius 276.15 Kelvin
4 Celsius 277.15 Kelvin
5 Celsius 278.15 Kelvin
6 Celsius 279.15 Kelvin
7 Celsius 280.15 Kelvin
8 Celsius 281.15 Kelvin
9 Celsius 282.15 Kelvin
10 Celsius 283.15 Kelvin