Celsius is a temperature scale where freezing point of water is 0 degrees and the boiling point is 100 degrees. Formerly known as centigrade. The abbreviation is "oC".
Kelvin is one of the few base units in the metric system and commonly used in science as the primary temperature unit. The absolute zero (at which all molecular motion stops) is defined to be 0 Kelvin and it equals to -273.15 Celsius or -459.67 Fahrenheit. Technically, the term "degree" is not used with this temperature scale but rather "Kelvins". The abbreviation is "K".
The conversion formula: Kelvin = Celsius + 273.15
For example: 30 o
C = 30 + 273.15 = 303.15 K
For fahrenheit and kelvin converter, please go to fahrenheit kelvin
For other temperature unit conversions, please go to Temperature Conversion