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Kelvin to Réaumur Calculator



How to use this Kelvin to Réaumur Calculator 🤔

Follow these steps to convert given Kelvin value from Kelvin units to Réaumur units.

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


To convert given temperature from Kelvin to Réaumur, use the following formula.

Réaumur = (Kelvin - 273.15) * 4 / 5


Calculation will be done after you enter a valid input.


The Kelvin scale is an absolute temperature scale named after the Scottish physicist William Thomson, 1st Baron Kelvin. It is commonly used in scientific and engineering applications where an absolute temperature reference is required. The Kelvin scale starts at absolute zero, the point at which all molecular motion ceases. The freezing point of water on the Kelvin scale is 273.15 K, and the boiling point is 373.15 K.


The Réaumur scale is a temperature scale developed by the French scientist René Antoine Ferchault de Réaumur. On this scale, the freezing point of water is 0 degrees, and the boiling point is 80 degrees under standard atmospheric pressure. While not as widely used as Celsius or Fahrenheit, the Réaumur scale was historically employed in some European countries for scientific and industrial purposes.