Enter the temperature in Celsius in the top field, then press the 'Convert' button. Alternatively, you can convert from Rømer to Celsius by entering the value in Rømer in the bottom field and press 'Convert'.

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 Rømer scale owes its name to it's inventor Ole Christensen Rømer. A Rømer degree is equivalent to 40/21 of a Celsius degree. It places the water freezing point at 7.5 °Rø.