Rankine to Celsius


Tell us what you think of the new site..


A ºF version of the Kelvin scale. Based upon the definitions of the Fahrenheit scale and the experimental evidence that absolute zero is -459.67ºF

ºC =
ºR - 491.67


Although initially defined by the freezing point of water (and later the melting point of ice), the Celsius scale is now officially a derived scale, defined in relation to the Kelvin temperature scale.

Zero on the Celsius scale (0 °C) is now defined as the equivalent to 273.15 K, with a temperature difference of 1 deg C equivalent to a difference of 1 K, meaning the unit size in each scale is the same. This means that 100 °C, previously defined as the boiling point of water, is now defined as the equivalent to 373.15 K.

The Celsius scale is an interval system but not a ratio system, meaning it follows a relative scale but not an absolute scale. This can be seen because the temperature interval between 20 °C and 30 °C is the same as between 30 °C and 40 °C, but 40 °C does not have twice the air heat energy of 20 °C.

A temperature difference of 1 deg C is the equivalent of a temperature difference 1.8°F.

More information >>

Rankine to Celsius

Mobile phone converter app

Metric Conversion Table

Online Calculator

This site is owned and maintained by Wight Hat Ltd. ©2003-2012.

Click here for more information on the web hosting of this site, more details at hosting and development. Find us on Google+

Our full terms & conditions can be found by clicking here.