Fahrenheit to Réaumur calculator

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How to use it?

To use the calculator, place your cursor in the desired unit field and write a number.The calculator will automatically convert your number and display the result in the other unit fields. If needed use the dot "." as the decimal separator.

Rounding: 
°F
°R

Fahrenheit to Réaumur formula

Réaumur to Fahrenheit formula

Fahrenheit
Fahrenheit

The Fahrenheit scale is a temperature scale based on one proposed in 1724 by Dutch–German–Polish physicist Daniel Gabriel Fahrenheit (1686–1736). It uses the degree Fahrenheit (symbol: °F) as the unit. Several accounts of how he originally defined his scale exist. The lower defining point, 0 °F, was established as the temperature of a solution of brine made from equal parts of ice, water and salt (ammonium chloride). Further limits were established as the melting point of ice (32 °F) and his best estimate of the average human body temperature (96 °F, about 2.6 °F less than the modern value due to a later redefinition of the scale).

Source: Wikipedia

Réaumur
Réaumur

The Réaumur scale (°Ré, °Re, °r), also known as the "octogesimal division", is a temperature scale for which the freezing and boiling points of water are defined as 0 and 80 degrees respectively. The scale is named for René Antoine Ferchault de Réaumur, who first proposed a similar scale in 1730. Réaumur’s thermometer contained diluted alcohol (ethanol) and was constructed on the principle of using 0° for the freezing temperature of water, and graduating the tube into degrees, each of which was one-thousandth of the volume contained by the bulb and tube up to the zero mark.

Source: Wikipedia


Fahrenheit to Réaumur Conversion Table

Below you can generate and download as CSV, Excel, PDF or print the Fahrenheit to Réaumur conversion table based on your needs.

Selected rounding: none (You can change it above in the dropdown)

From:
To:
Increment:
°F °R °F °R °F °R °F °R
1 -13.777777777778 26 -2.6666666666667 51 8.4444444444444 76 19.555555555556
2 -13.333333333333 27 -2.2222222222222 52 8.8888888888889 77 20
3 -12.888888888889 28 -1.7777777777778 53 9.3333333333333 78 20.444444444444
4 -12.444444444444 29 -1.3333333333333 54 9.7777777777778 79 20.888888888889
5 -12 30 -0.88888888888889 55 10.222222222222 80 21.333333333333
6 -11.555555555556 31 -0.44444444444444 56 10.666666666667 81 21.777777777778
7 -11.111111111111 32 0 57 11.111111111111 82 22.222222222222
8 -10.666666666667 33 0.44444444444444 58 11.555555555556 83 22.666666666667
9 -10.222222222222 34 0.88888888888889 59 12 84 23.111111111111
10 -9.7777777777778 35 1.3333333333333 60 12.444444444444 85 23.555555555556
11 -9.3333333333333 36 1.7777777777778 61 12.888888888889 86 24
12 -8.8888888888889 37 2.2222222222222 62 13.333333333333 87 24.444444444444
13 -8.4444444444444 38 2.6666666666667 63 13.777777777778 88 24.888888888889
14 -8 39 3.1111111111111 64 14.222222222222 89 25.333333333333
15 -7.5555555555556 40 3.5555555555556 65 14.666666666667 90 25.777777777778
16 -7.1111111111111 41 4 66 15.111111111111 91 26.222222222222
17 -6.6666666666667 42 4.4444444444444 67 15.555555555556 92 26.666666666667
18 -6.2222222222222 43 4.8888888888889 68 16 93 27.111111111111
19 -5.7777777777778 44 5.3333333333333 69 16.444444444444 94 27.555555555556
20 -5.3333333333333 45 5.7777777777778 70 16.888888888889 95 28
21 -4.8888888888889 46 6.2222222222222 71 17.333333333333 96 28.444444444444
22 -4.4444444444444 47 6.6666666666667 72 17.777777777778 97 28.888888888889
23 -4 48 7.1111111111111 73 18.222222222222 98 29.333333333333
24 -3.5555555555556 49 7.5555555555556 74 18.666666666667 99 29.777777777778
25 -3.1111111111111 50 8 75 19.111111111111 100 30.222222222222

  • Réaumur (1.25 °C)
    The Réaumur scale (°Ré, °Re, °r), also known as the "octogesimal division", is a temperature scale for which the freezing and boiling points of water are defined as 0 and 80 degrees respectively. The scale is named for René Antoine Ferchault de Réaumur, who first proposed a similar scale in 1730.
  • Fahrenheit (-17.22 °C)
    The Fahrenheit scale is a temperature scale based on one proposed in 1724 by Dutch–German–Polish physicist Daniel Gabriel Fahrenheit (1686–1736). It uses the degree Fahrenheit (symbol: °F) as the unit. Several accounts of how he originally defined his scale exist. The lower defining point, 0 °F, was established as the temperature of a solution of brine made from equal parts of ice, water and salt (ammonium chloride). Further limits were established as the melting point of ice (32 °F) and his best estimate of the average human body temperature (96 °F, about 2.6 °F less than the modern value due to a later redefinition of the scale). The scale is now usually defined by two fixed points: the temperature at which water freezes into ice is defined as 32 °F, and the boiling point of water is defined to be 212 °F, a 180 °F separation, as defined at sea level and standard atmospheric pressure.
Tags Fahrenheit to Réaumur °F to °R Fahrenheit °F Réaumur °R converter calculator conversion table