The Celsius (°C) scale is commonly used worldwide for measuring temperature, while the Rankine (°R) scale is primarily used in engineering, especially in thermodynamics and aerospace applications. The Rankine scale is an absolute temperature scale, similar to Kelvin, but it is based on the Fahrenheit degree size instead of Celsius.
To convert Celsius to Rankine, use this formula:
Rankine (°R) = (Celsius + 273.15) × 9/5
For example, if you want to convert 25°C to Rankine:
(25 + 273.15) × 9/5 = 536.67°R
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You can quickly verify other values with the online Temperature Converter.
The Rankine scale was named after William John Macquorn Rankine, a Scottish engineer and physicist who made significant contributions to thermodynamics.
The freezing point of water is 491.67°R, and the boiling point is 671.67°R, making it similar to the Fahrenheit scale but with an absolute zero starting point.
NASA and aerospace engineers use the Rankine scale when working with propulsion systems and high-temperature calculations.
Absolute zero in Rankine is 0°R, which is equivalent to −459.67°F or −273.15°C, the point where all molecular motion stops.
Jet engines and spacecraft rely on Rankine measurements, as extreme temperatures are a key factor in their performance and safety.
William John Macquorn Rankine (1820–1872) was a Scottish scientist who played a crucial role in shaping the field of thermodynamics. While his name is often associated with the Rankine temperature scale, his contributions extended beyond that—he helped develop theories on steam engines, energy conservation, and heat transfer.
Rankine’s work laid the foundation for modern power plants, refrigeration systems, and aerospace engineering. His absolute temperature scale was designed to work seamlessly with the Fahrenheit system, making it useful for engineers in the United States and other industries that rely on imperial temperature measurements.
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Converting Celsius to Rankine is straightforward—add 273.15 to the Celsius value and multiply by 9/5. While Rankine is not commonly used outside specialized engineering and physics contexts, it remains essential for thermodynamic calculations in aerospace, mechanical engineering, and energy production. For quick and reliable results, leverage robust online conversion tools.
