Degree Reaumur to Degree Celsius Conversion

Convert between Degree Reaumur and Degree Celsius quickly and accurately.

From Degree Reaumur

°r

To Degree Celsius

°C

How to Convert Degree Reaumur to Degree Celsius

Conversion Formula

1 °r = 1.25 °C

1 °C = 0.8 °r

Example

Convert 15 °r to °C:

15 °r = 15 × 1.25 °C = 18.75 °C

Unit Information

Learn about the temperature interval units you're converting between

Degree Reaumur

°r

Definition

The degree Reaumur (°r) is a temperature interval unit equal to 5/4 of a kelvin. It was historically used in some European countries and provides a different scale for temperature differences, with one degree Reaumur representing a larger temperature change than one degree Celsius.

History/Origin

Named after René Antoine Ferchault de Réaumur, the degree Reaumur was developed in the 18th century as an alternative temperature scale. It was defined as 1/80 of the temperature difference between the freezing and boiling points of water, making it larger than the Celsius scale.

Current Use

Rarely used in modern applications but occasionally found in historical literature and some specialized scientific contexts. It is mainly of historical interest and is sometimes used in temperature interval calculations for historical data analysis.

Multiplier

1.25

Offset

Degree Celsius

°C

Definition

The degree Celsius (°C) is a unit of temperature interval equal to one kelvin. When measuring temperature differences rather than absolute temperatures, one degree Celsius equals one kelvin, making it equivalent for interval measurements in the Celsius temperature scale.

History/Origin

Named after Anders Celsius, the degree Celsius was originally defined as 1/100 of the temperature difference between the freezing and boiling points of water. For temperature intervals, it maintains the same scale as the kelvin, providing a practical unit for everyday temperature difference measurements.

Current Use

Commonly used in everyday applications, weather reporting, and engineering for measuring temperature differences. It is widely used in HVAC systems, industrial processes, and scientific research where temperature intervals are measured in Celsius scale.

Multiplier

Offset