Kelvin converters Convert Kelvin Kelvin Celsius Fahrenheit Réaumur Kelvin Rankine Convert Easily convert Kelvin K to any other temperature measurements with this online tool. How does the Converter from Kelvin K work? This tool is very easy to use. You only need to write the quantities you want to convert (expressed in Kelvin to convert to any other measurements. Go Kelvin to... ...Celsius [K > C] ...Fahrenheit [K > F] ...Réaumur [K > Re] ...Rankine [K > R]