Celsius to Kelvin Converter

Convert Celsius to Kelvin instantly by adding the exact offset of 273.15, since the two scales share the same size of degree and differ only in where zero sits. Kelvin starts at absolute zero, the coldest possible temperature, which is why it is the standard scale in physics and chemistry. This conversion is common for gas law calculations, thermodynamics homework, and scientific data. Type any Celsius value, including negatives, and the Kelvin result updates live as you type. Because there is no multiplier involved, only the offset, the relationship is simple, but it is still worth having the tool add 273.15 exactly rather than rounding to 273. It runs entirely in your browser, so the answer is immediate, your input stays private, and it works offline after loading.