How many kelvin in 1 Rankine?
The answer is 0.55555555555556.
We assume you are converting between kelvin and degree Rankine.
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Rankine
The SI base unit for temperature is the kelvin.
1 kelvin is equal to 1.8 Rankine.
Note that rounding errors may occur, so always check the results.
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The kelvin (symbol: K) is the SI unit of temperature, and is one of the seven SI base units. It is defined by two facts: zero kelvins is absolute zero (when molecular motion stops), and one kelvin is the fraction 1/273.16 of the thermodynamic temperature of the triple point of water. The Celsius temperature scale is now defined in terms of the kelvin, with 0 °C corresponding to 273.15 kelvins, approximately the melting point of water under ordinary conditions.

››Definition: Rankine

Rankine is a thermodynamic (absolute) temperature scale named after the Scottish engineer and physicist William John Macquorn Rankine, who proposed it in 1859.

The symbol is °R (or °Ra if necessary to distinguish it from the Rømer and Réaumur scales). As with the Kelvin scale (symbol: K), zero on the Rankine scale is absolute zero. The Rankine scale differs from the Kelvin scale in that it uses smaller, degree Fahrenheit-size increments rather than degree Celsius-size increments. A temperature of 459.67 °R is precisely equal to and 0 °F.

Many engineering fields in the U.S. measure thermodynamic temperature using the Rankine scale. However, throughout the scientific world where measurements are made in SI units, thermodynamic temperature is measured in kelvins.

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