1/°R
per Rankine degree
Thermal expansion coefficientexact by definition
The per Rankine degree is exactly 9/5 per kelvin, the same size as per Fahrenheit degree. It is used where the surrounding calculation carries absolute temperature, as in the ideal-gas expansion coefficient 1/T, which is 1/519.67 °R⁻¹ at 60 °F.
| 1 1/°R | 1.8 1/K |
Solvers that use thermal expansion coefficient