# Rankine to Kelvin (°R to K)

## Rankine to Kelvin (°R to K) conversion calculator

Kelvin to Rankine (K to °R) (Swap units)

491.67°R = 273.15K

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 Kelvin (ºR to K) formula

Kelvin = ((Rankine - 491.67) / 1.79999999) + 273.15

### Rankine to Kelvin calculation

Kelvin = ((Rankine - 491.67) / 1.79999999) + 273.15

Kelvin = ((491.67 - 491.67) / 1.8) + 273.15

Kelvin = (-491.67 / 1.8) + 273.15

Kelvin = -273.15 + 273.15

Kelvin = -0

## Converting from Rankine to Kelvin

Rankine and Kelvin are both absolute temperature scales used in science. They both start at absolute zero meaning that 0°R = 0K. Rankine is based on the Fahrenheit scale popular in the United States whereas Kelvin is based on the Celsius scale and is the standard unit of temperature in the International System of Units (SI).

To convert from Rankine to Kelvin, you need to make three steps. First subtract 491.67 from the given temperature in Rankine, divide this value by 1.8 and then finally add 273.15.

For example, suppose you want to convert 600 Rankine. First we subtract 491.67 from 600 which gives us 108.33. Then divide the value by 1.8: 108.33 / 1.8 = 60.18. Finally add 273.15 to the value to get 333.33K.

Converting between Rankine and Kelvin can be a common task when referencing scientific papers between the United States and the rest of the world.

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.

Kelvin is an absolute temperature measurement defined in the International System of Units (SI). It is named after the Scottish physicist William Thomson (Lord Kelvin) who studied the field of thermodynamics. The Kelvin scale is based on absolute zero; the point at which all molecular motion ceases.

Unlike most other temperature scales, Kelvin does not have degrees as it is not a relative scale. The Kelvin scale is often used in physics, chemistry, and cosmology.

One advantage of Kelvin is that it does not have negative values making some calculations easier. This is useful in science calculations involving gases as it relates to the kinetic energy of molecules.

Starting value
Increment
Accuracy
Rankine
Kelvin
0°R
0.00000K
1°R
0.55556K
2°R
1.11111K
3°R
1.66667K
4°R
2.22222K
5°R
2.77778K
6°R
3.33333K
7°R
3.88889K
8°R
4.44444K
9°R
5.00000K
10°R
5.55556K
11°R
6.11111K
12°R
6.66667K
13°R
7.22222K
14°R
7.77778K
15°R
8.33333K
16°R
8.88889K
17°R
9.44444K
18°R
10.00000K
19°R
10.55556K
Rankine
Kelvin
20°R
11.11111K
21°R
11.66667K
22°R
12.22222K
23°R
12.77778K
24°R
13.33333K
25°R
13.88889K
26°R
14.44444K
27°R
15.00000K
28°R
15.55556K
29°R
16.11111K
30°R
16.66667K
31°R
17.22222K
32°R
17.77778K
33°R
18.33333K
34°R
18.88889K
35°R
19.44444K
36°R
20.00000K
37°R
20.55556K
38°R
21.11111K
39°R
21.66667K
Rankine
Kelvin
40°R
22.22222K
41°R
22.77778K
42°R
23.33333K
43°R
23.88889K
44°R
24.44444K
45°R
25.00000K
46°R
25.55556K
47°R
26.11111K
48°R
26.66667K
49°R
27.22222K
50°R
27.77778K
51°R
28.33333K
52°R
28.88889K
53°R
29.44444K
54°R
30.00000K
55°R
30.55556K
56°R
31.11111K
57°R
31.66667K
58°R
32.22222K
59°R
32.77778K
Rankine
Kelvin
60°R
33.33333K
61°R
33.88889K
62°R
34.44444K
63°R
35.00000K
64°R
35.55556K
65°R
36.11111K
66°R
36.66667K
67°R
37.22222K
68°R
37.77778K
69°R
38.33333K
70°R
38.88889K
71°R
39.44444K
72°R
40.00000K
73°R
40.55556K
74°R
41.11111K
75°R
41.66667K
76°R
42.22222K
77°R
42.77778K
78°R
43.33333K
79°R
43.88889K