Delisle to Réaumur Converter

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

Delisle to Réaumur Conversion Formula


Reverse formula and conversion (Réaumur to 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.


The Réaumur scale, named after René Antoine Ferchault de Réaumur places water freezing point at 0 °Ré and water boiling point at 80 °Ré.