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0 degrees Celsius = 273.15 kelvin
For example, 0 Kelvin (or absolute zero) is -273 degrees Celsius, so 50 kelvin would be -223 degrees Celsius! just subtract 273 from the Kelvin temperature.
10 degrees Celsius in terms of Kelvin is 283 degrees. To convert from Celsius to Kelvin, just add 273 degrees. Kelvin adds 273 degrees to Celsius because Kelvin is measured in essentially the same units as Celsius, but 0 degrees Kelvin is absolute zero. The temperature of matter cannot fall below absolute zero: there is no atomic activity at absolute zero. So, 0 degrees Celsius is 273 Kelvin - the freezing point of water.
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