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Rankine to Celsius Calculator



How to use this Rankine to Celsius Calculator 🤔

Follow these steps to convert given Rankine value from Rankine units to Celsius units.

  1. Enter the input Rankine value in the text field.
  2. The Celsius is calculated in realtime ⌚ using the formula, and displayed under the Celsius label.
  3. You may copy the resulting Celsius using the Copy button.


To convert given temperature from Rankine to Celsius, use the following formula.

Celsius = (Rankine - 491.67) * 5 / 9


Calculation will be done after you enter a valid input.


The Rankine scale is an absolute temperature scale named after the Scottish engineer and physicist William John Macquorn Rankine. Similar to the Kelvin scale, the Rankine scale starts at absolute zero, with each degree Rankine equal to one degree Fahrenheit. This scale is primarily used in thermodynamics and engineering, particularly in the United States. The freezing point of water on the Rankine scale is 491.67 °R, and the boiling point is 671.67 °R.


Celsius is a unit of temperature measurement that is part of the metric system. It is named after the Swedish astronomer Anders Celsius, who developed the scale. The Celsius scale sets the freezing point of water at 0 degrees and the boiling point at 100 degrees under standard atmospheric pressure. It is widely used in scientific and everyday contexts around the world.