Fahrenheit to Rankine
The Rankine scale (°Ra, sometimes °R) is the absolute-temperature counterpart of Fahrenheit, used mainly in US engineering and thermodynamics where calculations need a zero point at absolute zero. This converter changes Fahrenheit (°F) into Rankine and back in one place — handy for gas-law, combustion and heat-transfer work.
How it works
Rankine uses exactly the same degree size as Fahrenheit but shifts the zero point down to absolute zero, the coldest temperature physically possible. Because of that, conversion is a simple additive offset:
°Ra = °F + 459.67 (and the reverse, °F = °Ra − 459.67)
There is no scaling factor — only the 459.67 shift that separates the Fahrenheit zero from absolute zero. Type into either field and the other updates instantly, in both directions.
Example
To convert 32 °F (the freezing point of water): °Ra = 32 + 459.67 = 491.67 °Ra. To convert 212 °F (boiling water): 212 + 459.67 = 671.67 °Ra.
| Fahrenheit (°F) | Rankine (°Ra) |
|---|---|
| −459.67 °F | 0 °Ra |
| 0 °F | 459.67 °Ra |
| 32 °F | 491.67 °Ra |
| 98.6 °F | 558.27 °Ra |
| 212 °F | 671.67 °Ra |
Every conversion runs entirely in your browser — no data is ever uploaded.