Delisle to Rømer Converter




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

Delisle to Rømer Conversion Formula

$T_{romer}=60-T_{delisle}*\frac{7}{20}$

Reverse formula and conversion (Rømer to Delisle)

Delisle

The Delisle scale places the water freezing point at 150 °D, and water boiling point at 0 °D. Therefore at higher Delisle numbers correspond lower temperatures. It was invented by Joseph-Nicolas Delisle, a French astronomer.

Rømer

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.