How to convert degrees Rankine to degrees Fahrenheit
°F = °R − 459.67
Example: 25 °R → -434.67 °F
Temperature scales have different zero points, so you cannot convert them with a single multiplication factor.
Rankine to Fahrenheit table
| Rankine (°R) | Fahrenheit (°F) |
|---|---|
| -40 °R | -499.67 °F |
| -20 °R | -479.67 °F |
| -10 °R | -469.67 °F |
| 0 °R | -459.67 °F |
| 10 °R | -449.67 °F |
| 15 °R | -444.67 °F |
| 20 °R | -439.67 °F |
| 25 °R | -434.67 °F |
| 30 °R | -429.67 °F |
| 35 °R | -424.67 °F |
| 37 °R | -422.67 °F |
| 40 °R | -419.67 °F |
| 50 °R | -409.67 °F |
| 60 °R | -399.67 °F |
| 80 °R | -379.67 °F |
| 100 °R | -359.67 °F |
| 150 °R | -309.67 °F |
| 200 °R | -259.67 °F |
About these units
Rankine (°R): The Rankine scale (°R) starts at absolute zero like kelvin but uses Fahrenheit-sized degrees. It appears in some US engineering work.
Fahrenheit (°F): Fahrenheit (°F) puts water’s freezing point at 32° and boiling point at 212°. It is used for everyday temperatures in the United States.
Frequently asked questions
How do you convert degrees Rankine to degrees Fahrenheit?
To convert degrees Rankine to degrees Fahrenheit, use °F = °R − 459.67. For example, 25 °R = -434.67 °F.
How do I convert °R to °F?
Use the formula °F = °R − 459.67. For example, 25 °R gives -434.67 °F.
How do I convert degrees Fahrenheit back to degrees Rankine?
Use the reverse formula on our Fahrenheit to Rankine page, or press Swap in the converter above.
What is the Rankine scale?
The Rankine scale (°R) starts at absolute zero like kelvin but uses Fahrenheit-sized degrees. It appears in some US engineering work.
Conversion factors come from exact international definitions (NIST SP 811, BIPM) where they exist. Results show up to 10 significant digits. Need every temperature unit at once? Use the Temperature Converter.