Réaumur to Delisle Converter

About Réaumur (°Ré) and Delisle (°D) Units

Réaumur (°Re) is a temperature scale named after the French scientist René Antoine Ferchault de Réaumur. In this scale, water freezes at 0°Re and boils at 80°Re. It was historically used in Europe for scientific work, brewing, and some industrial processes. Although it is largely replaced by Celsius today, Réaumur is still referenced in historical recipes, old scientific texts, and specialty brewing measurements. The Delisle scale (°De), created in 1732 by French astronomer Joseph-Nicolas Delisle, is a historical temperature system. Unlike modern scales, it sets the boiling point of water at 0°De and the freezing point at 150°De. This scale was mainly used in Russia and parts of Europe for early meteorological observations and scientific measurements. Although no longer used today, Delisle remains of interest for historical studies and temperature conversions.

Réaumur to Delisle Conversion Formula

To convert between Réaumur (°Ré) and Delisle (°D), use the following formulas:

1 Réaumur (°Ré) = 148.125 Delisle (°D)

1 Delisle (°D) = 79.375 Réaumur (°Ré)

Example Conversions: Réaumur to Delisle