# Réaumur to Rankine (ºRé to °R)

## Réaumur to Rankine (ºRé to °R) conversion calculator

Rankine to Réaumur (°R to ºRé) (Swap units)

1ºRé = 493.92°R

Accuracy

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.

### Réaumur to Rankine (ºRé to ºR) formula

Rankine = (Réaumur * 2.25) + 491.67

### Réaumur to Rankine calculation

Rankine = (Réaumur * 2.25) + 491.67

Rankine = (0 * 2.25) + 491.67

Rankine = 0 + 491.67

Rankine = 491.67

Réaumur was widely used in Europe in the past but is now rarely seen. The Réaumur scale was named after the French physicist René Antoine Ferchault de Réaumur who developed it in the early 18th century. The freezing point of water is 0°Ré and the boiling point 80°Ré. This scale has been almost completely replaced by the Celsius scale.

Despite the Réaumur scale no longer being used, it had a significant impact in the history of temperature measurement.

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.

Starting value
Increment
Accuracy
Réaumur
Rankine
0ºRé
491.67000°R
1ºRé
493.92000°R
2ºRé
496.17000°R
3ºRé
498.42000°R
4ºRé
500.67000°R
5ºRé
502.92000°R
6ºRé
505.17000°R
7ºRé
507.42000°R
8ºRé
509.67000°R
9ºRé
511.92000°R
10ºRé
514.17000°R
11ºRé
516.42000°R
12ºRé
518.67000°R
13ºRé
520.92000°R
14ºRé
523.17000°R
15ºRé
525.42000°R
16ºRé
527.67000°R
17ºRé
529.92000°R
18ºRé
532.17000°R
19ºRé
534.42000°R
Réaumur
Rankine
20ºRé
536.67000°R
21ºRé
538.92000°R
22ºRé
541.17000°R
23ºRé
543.42000°R
24ºRé
545.67000°R
25ºRé
547.92000°R
26ºRé
550.17000°R
27ºRé
552.42000°R
28ºRé
554.67000°R
29ºRé
556.92000°R
30ºRé
559.17000°R
31ºRé
561.42000°R
32ºRé
563.67000°R
33ºRé
565.92000°R
34ºRé
568.17000°R
35ºRé
570.42000°R
36ºRé
572.67000°R
37ºRé
574.92000°R
38ºRé
577.17000°R
39ºRé
579.42000°R
Réaumur
Rankine
40ºRé
581.67000°R
41ºRé
583.92000°R
42ºRé
586.17000°R
43ºRé
588.42000°R
44ºRé
590.67000°R
45ºRé
592.92000°R
46ºRé
595.17000°R
47ºRé
597.42000°R
48ºRé
599.67000°R
49ºRé
601.92000°R
50ºRé
604.17000°R
51ºRé
606.42000°R
52ºRé
608.67000°R
53ºRé
610.92000°R
54ºRé
613.17000°R
55ºRé
615.42000°R
56ºRé
617.67000°R
57ºRé
619.92000°R
58ºRé
622.17000°R
59ºRé
624.42000°R
Réaumur
Rankine
60ºRé
626.67000°R
61ºRé
628.92000°R
62ºRé
631.17000°R
63ºRé
633.42000°R
64ºRé
635.67000°R
65ºRé
637.92000°R
66ºRé
640.17000°R
67ºRé
642.42000°R
68ºRé
644.67000°R
69ºRé
646.92000°R
70ºRé
649.17000°R
71ºRé
651.42000°R
72ºRé
653.67000°R
73ºRé
655.92000°R
74ºRé
658.17000°R
75ºRé
660.42000°R
76ºRé
662.67000°R
77ºRé
664.92000°R
78ºRé
667.17000°R
79ºRé
669.42000°R