If a substance has a temperature of 273 kelvins what is its temperature in degrees Celsius?

Remember the three different temperature scales.

They are Kelvin, Celsius and Fahrenheit.

273K = 0oC = 32o F

At this temperature it is the Freezing point of water or the melting point of Ice.

Also

373K = 100oC = 212oF the boiling point of water.

NB In the 'Kelvin' Scale , the degree symbol ( a little superscript 'o') is NOT shown. However, it is shown in the Celsius and Fahrenheit scales.

NNB OK ( Zero Kelvin) is the absolute minimum temperature ; '??all molecular motion stops'.

NNNB The freezing point of helium is 4K(-269oC) and its boiling point is 6K(-267oC).