Convert Kelvins to Celsius

Enter the temperature in kelvins below to get the value converted to Celsius.

Results in Degrees Celsius:
Loading content.
1 K = -272.15 °C
Do you want to convert Celsius to kelvins?

How to Convert Kelvins to Celsius

Thermometers measure temperature and come in many forms and sizes

Convert kelvins to degrees Celsius with this simple formula:

degrees Celsius = [K] - 273.15

Insert the [K] temperature measurement in the formula and then solve to find the result.

For example, let's convert 50 K to degrees Celsius:

50 K = ( 50 - 273.15 ) = -223.15 °C

Kelvins and Celsius are both units used to measure temperature. Keep reading to learn more about each unit of measure.


The Kelvin scale is an absolute temperature scale that uses absolute zero as the starting point. The kelvin is defined in terms of the Boltzmann constant, which is a measure of the energy of motion corresponding to one kelvin. 0 kelvins are equal to −273.15 degrees Celsius, which is the point of absolute zero.

The kelvin is the SI base unit for temperature in the metric system. Kelvins can be abbreviated as K, for example 1 kelvin can be written as 1 K.

The kelvin scale is different from other temperature scales in that it is not expressed in degrees, values are expressed in kelvins. When using the Kelvin scale in writing, the "k" is capitalized, however when using the kelvin as a unit the "k" should be lower-case, even though it is named for a person.

Important Temperatures In Kelvins

Absolute Zero0 K
Freezing Point of Water273.15 K
Triple Point of Water273.16 K
Boiling Point of Water373.15 K


The Celsius temperature scale, also commonly referred to as the centigrade scale, is defined in terms of the kelvin. Specifically, degrees Celsius is equal to kelvins minus 273.15.

The degree Celsius is the SI derived unit for temperature in the metric system. A degree Celsius is sometimes also referred to as a degree centigrade. Celsius can be abbreviated as C, for example 1 degree Celsius can be written as 1 °C.

Important Temperatures In Degrees Celsius

TemperatureDegrees Celsius
Absolute Zero-273.15 °C
Freezing Point of Water0 °C
Triple Point of Water0.01 °C
Boiling Point of Water100 °C

Kelvin Measurements and Equivalent Celsius Conversions

Common kelvin values converted to the equivalent Celsius value
Kelvins Celsius
-50 K -323.15 °C
-40 K -313.15 °C
-30 K -303.15 °C
-20 K -293.15 °C
-10 K -283.15 °C
0 K -273.15 °C
10 K -263.15 °C
20 K -253.15 °C
30 K -243.15 °C
40 K -233.15 °C
50 K -223.15 °C
60 K -213.15 °C
70 K -203.15 °C
80 K -193.15 °C
90 K -183.15 °C
100 K -173.15 °C
110 K -163.15 °C
120 K -153.15 °C
130 K -143.15 °C
140 K -133.15 °C
150 K -123.15 °C
160 K -113.15 °C
170 K -103.15 °C
180 K -93.15 °C
190 K -83.15 °C
200 K -73.15 °C
300 K 26.85 °C
400 K 126.85 °C
500 K 226.85 °C
600 K 326.85 °C
700 K 426.85 °C
800 K 526.85 °C
900 K 626.85 °C
1000 K 726.85 °C

More Kelvin Temperature Conversions

Convert to Fahrenheit
1 K is equal to -457.87 °F
Convert to Rankine
1 K is equal to 1.8 °R
Convert to Delisle
1 K is equal to 558.225 °De
Convert to Newton
1 K is equal to -89.8095 °N