Table of content
Kelvin to Rankine - How to Convert Kelvin to Rankine
The Kelvin (K) scale is an absolute temperature scale used in science and engineering, starting at absolute zero (0 K), where all molecular motion stops. It is widely applied in physics, chemistry, and space studies.
The Rankine (°R) scale is another absolute temperature scale, mainly used in thermodynamics and engineering applications in the United States. Unlike Kelvin, which is based on the Celsius scale, Rankine follows the Fahrenheit scale but starts at absolute zero (0°R = -459.67°F).
To convert Kelvin to Rankine, use this formula:
Rankine (°R) = Kelvin (K) × 1.8
For example, to convert 300 K to Rankine:
300 × 1.8 = 540°R
.jpg)
Interesting Facts
-
Absolute zero (0 K or 0°R) is the lowest possible temperature, where no thermal energy remains in a system.
-
The surface of the Sun is around 5,778 K (10,400°R).
-
The Rankine scale was developed by William John Macquorn Rankine, a Scottish engineer and physicist who contributed significantly to thermodynamics and steam engine efficiency.
-
NASA and aerospace engineers use Rankine in thermodynamic calculations, especially for high-temperature applications like jet propulsion and rocket science.
-
Cryogenic researchers prefer Kelvin, as it is the SI unit of thermodynamic temperature and used in extreme low-temperature experiments.
The History of the Rankine Scale
The Rankine scale was introduced in 1859 by William Rankine, a pioneering scientist in thermodynamics and mechanical engineering. His work on steam power, energy conservation, and heat transfer helped develop early steam engines and laid the foundation for modern power plants.
Rankine’s contributions remain crucial in fields like aviation, nuclear energy, and refrigeration. Though less common than Kelvin, the Rankine scale is still used in aerospace and engineering disciplines in the U.S.
.jpg)
Conclusion
Converting Kelvin to Rankine is straightforward—simply multiply by 1.8. While Kelvin is the global standard in science, Rankine is still valuable in American engineering and thermodynamics. Understanding these temperature scales is essential for fields like aerospace, power generation, and advanced physics research.
