Convert Rankine (°R) to Fahrenheit (°F) instantly. Enter any value and get the result immediately.
°R → °F Converter
| Rankine (°R) | Fahrenheit (°F) |
|---|---|
| 0.1 °R | -459.57 °F |
| 0.5 °R | -459.17 °F |
| 1 °R | -458.67 °F |
| 2 °R | -457.67 °F |
| 5 °R | -454.67 °F |
| 10 °R | -449.67 °F |
| 20 °R | -439.67 °F |
| 50 °R | -409.67 °F |
| 100 °R | -359.67 °F |
| 200 °R | -259.67 °F |
| 500 °R | 40.33 °F |
| 1000 °R | 540.33 °F |
| 5000 °R | 4540.33 °F |
| 10000 °R | 9540.33 °F |
Rankine to Fahrenheit is the simplest Rankine conversion — both scales use the same degree size, so you just subtract 459.67:
Why 459.67? Because Fahrenheit's zero point (0°F) is 459.67 degrees above absolute zero. Rankine starts at absolute zero (0°R), so subtracting 459.67 shifts the scale back to the Fahrenheit reference point.
Examples:
Rankine (°R) is an absolute temperature scale proposed by Scottish engineer William John Macquorn Rankine in 1859. It starts at absolute zero (0°R = -459.67°F) and uses Fahrenheit-sized degrees. This makes Rankine the "Fahrenheit version" of Kelvin — both are absolute scales, but Kelvin pairs with Celsius while Rankine pairs with Fahrenheit.
Rankine is mainly used in US engineering thermodynamics — aerospace, HVAC systems, and steam power plants. The famous Rankine Cycle — the thermodynamic cycle powering most steam turbines and power plants in the world — is named after him.
Fahrenheit (°F) was developed by German physicist Daniel Gabriel Fahrenheit in 1724. It is the primary everyday temperature scale in the United States. Water freezes at 32°F and boils at 212°F. Normal human body temperature is 98.6°F. Unlike Rankine, Fahrenheit is a relative scale — its zero point (0°F) is not absolute zero.
| Rankine (°R) | Fahrenheit (°F) | Reference Point |
|---|---|---|
| 0 °R | -459.67 °F | Absolute zero |
| 7.2 °R | -452.47 °F | Liquid helium temperature |
| 138.6 °R | -321.07 °F | Liquid nitrogen temperature |
| 419.67 °R | -40 °F | Equal point of °F and °C |
| 459.67 °R | 0 °F | Fahrenheit zero point |
| 491.67 °R | 32 °F | Freezing point of water |
| 527.67 °R | 68 °F | Room temperature |
| 558.27 °R | 98.6 °F | Normal body temperature |
| 559.67 °R | 100 °F | Mild fever |
| 671.67 °R | 212 °F | Boiling point of water |
| 809.67 °R | 350 °F | Oven baking temperature |
| 1459.67 °R | 1000 °F | Industrial furnace |
| Feature | Rankine (°R) | Fahrenheit (°F) |
|---|---|---|
| Type | Absolute scale | Relative scale |
| Zero point | Absolute zero | Arbitrary (−459.67°F) |
| Degree size | Same as °F | Same as °R |
| Can be negative? | No | Yes |
| Absolute zero | 0 °R | -459.67 °F |
| Freezing point of water | 491.67 °R | 32 °F |
| Boiling point of water | 671.67 °R | 212 °F |
| Used in | US Engineering | US Daily Life |
The formula is: °F = °R − 459.67. Simply subtract 459.67 from any Rankine value. Example: 671.67°R − 459.67 = 212°F.
491.67°R = 32°F. This is the freezing point of water. Formula: 491.67 − 459.67 = 32°F.
671.67°R = 212°F. This is the boiling point of water at sea level. Formula: 671.67 − 459.67 = 212°F.
0°R = -459.67°F. This is absolute zero — the theoretically coldest temperature possible. Formula: 0 − 459.67 = -459.67°F.
558.27°R = 98.6°F. This is the normal human body temperature. Formula: 558.27 − 459.67 = 98.6°F.
Both use identical degree sizes, but Rankine starts at absolute zero (0°R = -459.67°F) while Fahrenheit has an arbitrary zero point. Rankine is used in engineering thermodynamics; Fahrenheit is used for everyday temperatures in the US.