Temperature Unit Conversion
The Celsius scale is the most commonly used temperature scale and the standard used for most applications by the scientific community worldwide. The boiling point of water is 100 °C. The freezing point is 0 °C. The word centigrade is used in many languages to describe Celsius.
The Réaumur scale, named after René Antoine Ferchault de Réaumur places water freezing point at 0 °Ré and water boiling point at 80 °Ré.
TRéaumur = TCelsius*4/5
T(K) = T(°C) + 273.15
T(°F) = T(°C) × 9/5 + 32
T(°R) = (T(°C) + 273.15) × 9/5