Degree Rankine (°R)
Absolute scale with the size of a Fahrenheit degree; 0 °R is absolute zero and K = °R × 5/9.
What is a degree Rankine?
- Symbol
- °R
- Quantity
- Temperature
- Unit system
- US customary
- Definition
- Absolute scale with the size of a Fahrenheit degree; 0 °R is absolute zero and K = °R × 5/9.
- Exact
- Yes, the value is exact by definition
- Source
- NIST Special Publication 811 (2008), Appendix B.8
Common applications
An absolute scale with Fahrenheit-sized degrees, used in some US engineering thermodynamics calculations.
Degree Rankine in other temperature units
- K = °R ÷ 1.8Kelvin
- °C = (°R − 491.67) ÷ 1.8Degree Celsius
- °F = °R − 459.67Degree Fahrenheit
Degree Rankine quick reference
| Degree Rankine | Degree Celsius | Degree Fahrenheit | Kelvin |
|---|---|---|---|
| 0 °R | = -273.15 °C | = -459.67 °F | = 0 K |
| 400 °R | ≈ -50.92777778 °C | = -59.67 °F | ≈ 222.2222222 K |
| 459.67 °R | ≈ -17.77777778 °C | = 0 °F | ≈ 255.3722222 K |
| 491.67 °R | = 0 °C | = 32 °F | = 273.15 K |
| 500 °R | ≈ 4.627777778 °C | = 40.33 °F | ≈ 277.7777778 K |
| 527.67 °R | = 20 °C | = 68 °F | = 293.15 K |