# Celsius to Réaumur

Bookmark Page Réaumur to Celsius (Swap Units)

Format
Accuracy

Note: Fractional results are rounded to the nearest 1/64. For a more accurate answer please select 'decimal' from the options above the result.

Note: You can increase or decrease the accuracy of this answer by selecting the number of significant figures required from the options above the result.

Note: For a pure decimal result please select 'decimal' from the options above the result.

Show formula

## Convert Celsius to Réaumur

ºRé =
℃ * 0.80000

Show working
Show result in exponential format

## Celsius

Although initially defined by the freezing point of water (and later the melting point of ice), the Celsius scale is now officially a derived scale, defined in relation to the Kelvin temperature scale.

Zero on the Celsius scale (0℃) is now defined as the equivalent to 273.15K, with a temperature difference of 1 deg C equivalent to a difference of 1K, meaning the unit size in each scale is the same. This means that 100℃, previously defined as the boiling point of water, is now defined as the equivalent to 373.15K.

The Celsius scale is an interval system but not a ratio system, meaning it follows a relative scale but not an absolute scale. This can be seen because the temperature interval between 20℃ and 30℃ is the same as between 30℃ and 40℃, but 40℃ does not have twice the air heat energy of 20℃.

A temperature difference of 1 deg C is the equivalent of a temperature difference 1.8°F.

ºRé =
℃ * 0.80000

## Réaumur

The Réaumur scale also known as the "octogesimal division", is a temperature scale in which the freezing and boiling points of water are set to 0 and 80 degrees respectively. The scale is named after René Antoine Ferchault de Réaumur, who first proposed something similar in 1730.

Celsius to Réaumur table
Start
Increments
Accuracy
Format
Print table
< Smaller Values Larger Values >
Celsius Réaumur
0 0.00ºRé
1 0.80ºRé
2 1.60ºRé
3 2.40ºRé
4 3.20ºRé
5 4.00ºRé
6 4.80ºRé
7 5.60ºRé
8 6.40ºRé
9 7.20ºRé
10 8.00ºRé
11 8.80ºRé
12 9.60ºRé
13 10.40ºRé
14 11.20ºRé
15 12.00ºRé
16 12.80ºRé
17 13.60ºRé
18 14.40ºRé
19 15.20ºRé
Celsius Réaumur
20 16.00ºRé
21 16.80ºRé
22 17.60ºRé
23 18.40ºRé
24 19.20ºRé
25 20.00ºRé
26 20.80ºRé
27 21.60ºRé
28 22.40ºRé
29 23.20ºRé
30 24.00ºRé
31 24.80ºRé
32 25.60ºRé
33 26.40ºRé
34 27.20ºRé
35 28.00ºRé
36 28.80ºRé
37 29.60ºRé
38 30.40ºRé
39 31.20ºRé
Celsius Réaumur
40 32.00ºRé
41 32.80ºRé
42 33.60ºRé
43 34.40ºRé
44 35.20ºRé
45 36.00ºRé
46 36.80ºRé
47 37.60ºRé
48 38.40ºRé
49 39.20ºRé
50 40.00ºRé
51 40.80ºRé
52 41.60ºRé
53 42.40ºRé
54 43.20ºRé
55 44.00ºRé
56 44.80ºRé
57 45.60ºRé
58 46.40ºRé
59 47.20ºRé