K = °C + 273.15 1 K = -272.15 °C (temperature scales have offsets, so this is a single point, not a factor)
Converted value
1 °C = 274.15 K1 °C = 274.15 K
K = °C + 273.15 0 K = absolute zero = −273.15 °C
Result in Kelvin (K)
274.15
Common temperature conversions
−40 °C
−40 °F
0 °C
32 °F
20 °C
68 °F
37 °C
98.6 °F
100 °C
212 °F
32 °F
0 °C
98.6 °F
37 °C
0 K
−273.15 °C
Celsius to kelvin conversion table
Celsius to kelvin
Celsius (°C)
Kelvin (K)
-273.15 °C
0 K
-196 °C
77.15 K
-40 °C
233.15 K
0 °C
273.15 K
20 °C
293.15 K
25 °C
298.15 K
37 °C
310.15 K
100 °C
373.15 K
The formula
K = °C + 273.15
K = °C + 273.15. 0 K = absolute zero = −273.15 °C. These are exact definitions, so the only rounding is in the displayed result (10 significant digits).
When you need it
Celsius to kelvin is a science and engineering conversion: gas laws, thermodynamics and color temperature use kelvin. Add 273.15. The degree size is the same, so a change of 1 °C is a change of 1 K.