Degree Fahrenheit to Degree Reaumur Conversion
Convert between Degree Fahrenheit and Degree Reaumur quickly and accurately.
How to Convert Degree Fahrenheit to Degree Reaumur
Conversion Formula
Example
Convert 15 °F to °r:
Unit Information
Learn about the temperature interval units you're converting between
Degree Fahrenheit
°F
Definition
The degree Fahrenheit (°F) is a unit of temperature interval equal to 5/9 of a kelvin. When measuring temperature differences, one degree Fahrenheit represents a smaller temperature change than one degree Celsius or one kelvin, making it useful for precise temperature interval measurements.
History/Origin
Named after Daniel Gabriel Fahrenheit, the degree Fahrenheit was originally defined as 1/180 of the temperature difference between the freezing and boiling points of water. For temperature intervals, it provides a finer resolution than Celsius, with 1.8°F equal to 1°C.
Current Use
Widely used in the United States for measuring temperature differences in weather, HVAC systems, and industrial processes. It is commonly used in temperature control systems where finer resolution is needed for temperature interval measurements.
Multiplier
0.556
Offset
0
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
0
Degree Fahrenheit to Degree Reaumur Conversion Table
| Degree Fahrenheit [°F] | Degree Reaumur [°r] |
|---|---|
| 1 °F | 0.444444 °r |
| 10 °F | 4.444444 °r |
| 25 °F | 11.111111 °r |
| 50 °F | 22.222222 °r |
| 100 °F | 44.444444 °r |
| 0 °F | 0E+0 °r |
| -10 °F | -4.444444 °r |
| -40 °F | -17.777778 °r |
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