The conversion

0K = −273.15°C

°C = K − 273.15, so 0 − 273.15 = −273.15.

0 K is well outside the range outdoor air occupies on Earth, so there is no useful weather description for it — this page is arithmetic rather than a forecast.

Convert something else

68°F

The range either side

Neighbouring values, for when the number you actually wanted was a degree or two away.

Kelvin to Celsius either side of 0 K.
KelvinCelsius
−5 K−278.15 °C
−4 K−277.15 °C
−3 K−276.15 °C
−2 K−275.15 °C
−1 K−274.15 °C
0 K−273.15 °C
1 K−272.15 °C
2 K−271.15 °C
3 K−270.15 °C
4 K−269.15 °C
5 K−268.15 °C

The other direction

−273.15 °C converts back to 0 K, which is the same relationship read the other way. Kelvin and Celsius differ by a constant, so that conversion is addition in one direction and subtraction in the other.

The full converter handles any value, in either direction, including kelvin, and shows the formula as it works.