Rankine to Delisle (°R to °De)

Rankine to Delisle (°R to °De) conversion calculator

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Delisle to Rankine (°De to °R) (Swap units)

1°R = -508.89167°De

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.

Rankine to Delisle (ºR to °De) formula

Delisle = ((Rankine - 491.67) / 1.2) + -100

Rankine to Delisle calculation

Delisle = ((Rankine - 491.67) / 1.2) + -100

Delisle = ((1 - 491.67) / 1.2) + -100

Delisle = (-491.67 / 1.2) + -100

Delisle = -409.725 + -100

Delisle = -509.725

About Rankine

Rankine is temperature unit normally used in thermodynamics. It is named after the Scottish engineer and physicist William John Macquorn Rankine, who is know for his work in thermodynamics. The Rankine scale is based on the Fahrenheit scale with degree increments identical but starting at absolute zero.

With the zero point at absolute zero (-459.67°F) it is easy to convert between Rankine and Fahrenheit: simply subtract 459.67.

The Rankine scale is not normally used in everyday life as it is an engineering unit particularly thermodynamics in the United States.

About Delisle

Developed by French astronomer Joseph-Nicolas Delisle, the Delisle scale was created in the early 18th century. It is a backwards scale that has decreasing values as the temperature rises.

The freezing point of water is 150 degrees and the boiling point is 0 degrees. To convert a temperature from Delisle to Celsius, you can use the formula: Celsius = (150 - Delisle) * 2/3.

In the 18th century the Delisle scale was widely used particularly in Russia but has since been forgotten and replaced by the Celsius scale.

 

Rankine to Delisle table

Starting value
Increment
Accuracy
Rankine
Delisle
0°R
-509.72500°De
1°R
-508.89167°De
2°R
-508.05833°De
3°R
-507.22500°De
4°R
-506.39167°De
5°R
-505.55833°De
6°R
-504.72500°De
7°R
-503.89167°De
8°R
-503.05833°De
9°R
-502.22500°De
10°R
-501.39167°De
11°R
-500.55833°De
12°R
-499.72500°De
13°R
-498.89167°De
14°R
-498.05833°De
15°R
-497.22500°De
16°R
-496.39167°De
17°R
-495.55833°De
18°R
-494.72500°De
19°R
-493.89167°De
Rankine
Delisle
20°R
-493.05833°De
21°R
-492.22500°De
22°R
-491.39167°De
23°R
-490.55833°De
24°R
-489.72500°De
25°R
-488.89167°De
26°R
-488.05833°De
27°R
-487.22500°De
28°R
-486.39167°De
29°R
-485.55833°De
30°R
-484.72500°De
31°R
-483.89167°De
32°R
-483.05833°De
33°R
-482.22500°De
34°R
-481.39167°De
35°R
-480.55833°De
36°R
-479.72500°De
37°R
-478.89167°De
38°R
-478.05833°De
39°R
-477.22500°De
Rankine
Delisle
40°R
-476.39167°De
41°R
-475.55833°De
42°R
-474.72500°De
43°R
-473.89167°De
44°R
-473.05833°De
45°R
-472.22500°De
46°R
-471.39167°De
47°R
-470.55833°De
48°R
-469.72500°De
49°R
-468.89167°De
50°R
-468.05833°De
51°R
-467.22500°De
52°R
-466.39167°De
53°R
-465.55833°De
54°R
-464.72500°De
55°R
-463.89167°De
56°R
-463.05833°De
57°R
-462.22500°De
58°R
-461.39167°De
59°R
-460.55833°De
Rankine
Delisle
60°R
-459.72500°De
61°R
-458.89167°De
62°R
-458.05833°De
63°R
-457.22500°De
64°R
-456.39167°De
65°R
-455.55833°De
66°R
-454.72500°De
67°R
-453.89167°De
68°R
-453.05833°De
69°R
-452.22500°De
70°R
-451.39167°De
71°R
-450.55833°De
72°R
-449.72500°De
73°R
-448.89167°De
74°R
-448.05833°De
75°R
-447.22500°De
76°R
-446.39167°De
77°R
-445.55833°De
78°R
-444.72500°De
79°R
-443.89167°De