Réaumur to Delisle 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: 
°R
°De

Réaumur to Delisle formula

Delisle to Réaumur formula

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

Delisle
Delisle

The Delisle scale (°D) is a temperature scale invented in 1732 by the French astronomer Joseph-Nicolas Delisle (1688–1768). In 1732, Delisle built a thermometer that used mercury as a working fluid. Delisle chose his scale using the temperature of boiling water as the fixed zero point and measured the contraction of the mercury (with lower temperatures) in hundred-thousandths. Delisle thermometers usually had 2400 or 2700 gradations, appropriate to the winter in St. Petersburg, as he had been invited by Peter the Great to St. Petersburg to found an observatory in 1725.

Source: Wikipedia


Réaumur to Delisle Conversion Table

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

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

From:
To:
Increment:
°R °De °R °De °R °De °R °De
1 148.125 26 101.25 51 54.375 76 7.5
2 146.25 27 99.375 52 52.5 77 5.625
3 144.375 28 97.5 53 50.625 78 3.75
4 142.5 29 95.625 54 48.75 79 1.875
5 140.625 30 93.75 55 46.875 80 0
6 138.75 31 91.875 56 45 81 -1.875
7 136.875 32 90 57 43.125 82 -3.75
8 135 33 88.125 58 41.25 83 -5.625
9 133.125 34 86.25 59 39.375 84 -7.5
10 131.25 35 84.375 60 37.5 85 -9.375
11 129.375 36 82.5 61 35.625 86 -11.25
12 127.5 37 80.625 62 33.75 87 -13.125
13 125.625 38 78.75 63 31.875 88 -15
14 123.75 39 76.875 64 30 89 -16.875
15 121.875 40 75 65 28.125 90 -18.75
16 120 41 73.125 66 26.25 91 -20.625
17 118.125 42 71.25 67 24.375 92 -22.5
18 116.25 43 69.375 68 22.5 93 -24.375
19 114.375 44 67.5 69 20.625 94 -26.25
20 112.5 45 65.625 70 18.75 95 -28.125
21 110.625 46 63.75 71 16.875 96 -30
22 108.75 47 61.875 72 15 97 -31.875
23 106.875 48 60 73 13.125 98 -33.75
24 105 49 58.125 74 11.25 99 -35.625
25 103.125 50 56.25 75 9.375 100 -37.5

  • Delisle (99.33 °C)
    The Delisle scale (°D) is a temperature scale invented in 1732 by the French astronomer Joseph-Nicolas Delisle (1688–1768). Delisle was the author of Mémoires pour servir à l'histoire et aux progrès de l'Astronomie, de la Géographie et de la Physique (1738).
  • 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.
Tags Réaumur to Delisle °R to °De Réaumur °R Delisle °De converter calculator conversion table

Temperature

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Réaumur to Rankine
Delisle to Newton
Delisle to Réaumur
Delisle to Celsius
Delisle to Rømer
Delisle to Fahrenheit
Delisle to Kelvin
Delisle to Rankine