Degree Reaumur to Degree Centigrade Conversion

Convert between Degree Reaumur and Degree Centigrade quickly and accurately.

From Degree Reaumur

°r

To Degree Centigrade

°C

How to Convert Degree Reaumur to Degree Centigrade

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 Centigrade

°C

Definition

The degree centigrade (°C) is an alternative name for degree Celsius, representing the same temperature interval unit. It is equal to one kelvin when measuring temperature differences and is used interchangeably with degree Celsius in many contexts.

History/Origin

The term "centigrade" was historically used to describe the temperature scale now known as Celsius. It means "hundred degrees" and refers to the 100-degree interval between the freezing and boiling points of water. For temperature intervals, it maintains the same scale as the kelvin.

Current Use

Used interchangeably with degree Celsius in many contexts, particularly in older literature and some engineering applications. It represents the same temperature interval as degree Celsius and is commonly used in temperature difference measurements.

Multiplier

Offset