Celsius to Kelvin

Convert Celsius to Kelvin. 1 °C equals 274.15 K. Type a value on either side; the formula and tables below show how it works.

°C
K
1 Celsius equals
274.15K

Formula: K = °C + 273.15. Example: 25 °C = 298.15 K.

1 Celsius in every unit

Fahrenheit33.8 °F
Kelvin274.15 K

Celsius to Kelvin table

CelsiusKelvin
-40 °C233.15 K
-20 °C253.15 K
-10 °C263.15 K
0 °C273.15 K
10 °C283.15 K
20 °C293.15 K
25 °C298.15 K
30 °C303.15 K
37 °C310.15 K
40 °C313.15 K
50 °C323.15 K
100 °C373.15 K
KelvinCelsius
-40 K-313.15 °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
25 K-248.15 °C
30 K-243.15 °C
37 K-236.15 °C
40 K-233.15 °C
50 K-223.15 °C
100 K-173.15 °C

How to convert celsius to kelvin

K = °C + 273.15

Temperature scales have different zero points, so converting needs an offset as well as a scale factor. 25 °C becomes 298.15 K. A handy check: −40 is the same in Celsius and Fahrenheit, and body temperature is about 37 °C or 98.6 °F.

About the units

Celsius (°C). Water freezes at 0 °C and boils at 100 °C at sea level. Used in most of the world and in science.

Kelvin (K). The SI unit of temperature, starting at absolute zero (−273.15 °C). Used in physics and chemistry.

Other temperature conversions

Celsius to Fahrenheit · Celsius to Kelvin · Fahrenheit to Kelvin · Kelvin to Celsius · Kelvin to Fahrenheit

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