Convert Rankine (°R) to Kelvin (K)
Conversion:
1 Rankine (°R) = 0.55555555556 Kelvin (K)
How to Convert Rankine (°R) to Kelvin (K)
1 r = 0.55555555556 k
1 k = 1.8 r
Example: convert 15 Rankine (°R) to Kelvin (K):
25 r = 13.888888889 k
Rankine (°R) to Kelvin (K) Conversion Table
| Rankine (°R) | Kelvin (K) |
|---|---|
| 0.01 r | 0.0055555555555 k |
| 0.1 r | 0.055555555556 k |
| 1 r | 0.55555555556 k |
| 2 r | 1.1111111111 k |
| 3 r | 1.6666666667 k |
| 5 r | 2.7777777778 k |
| 10 r | 5.5555555556 k |
| 20 r | 11.111111111 k |
| 50 r | 27.777777778 k |
| 100 r | 55.555555556 k |
| 1000 r | 555.55555556 k |
Rankine (°R)
Definition
Rankine (°R) is an absolute temperature scale where 0°R equals absolute zero (−459.67°F). Each Rankine degree equals one degree Fahrenheit.
History
The Rankine scale was proposed in 1859 by William John Macquorn Rankine, a Scottish physicist and engineer. It was designed as the Fahrenheit-based equivalent of the Kelvin scale for use in thermodynamic engineering.
Current use
Rankine is used primarily in American engineering and thermodynamics, particularly in the aerospace and HVAC industries. Some US engineering textbooks and thermodynamic tables reference Rankine temperatures.
Kelvin (K)
Definition
The kelvin (K) is the SI base unit of temperature. Its zero point (0 K = −273.15°C) is absolute zero, the theoretical lowest possible temperature. Each kelvin increment equals one degree Celsius.
History
The kelvin was named after Lord Kelvin (William Thomson), who proposed the absolute temperature scale in 1848. It was adopted as the SI base unit of temperature in 1954, and its definition was revised in 2019 based on the Boltzmann constant.
Current use
Kelvins are the standard temperature unit in physics, chemistry, astronomy, and engineering. Color temperatures of light, cosmic background radiation, and thermodynamic calculations all use kelvins.