Fahrenheit to Rankine Conversion Table
-40 to 500°F — absolute temperature for imperial engineering
Any temperature value in °F can be converted to °Ra using the conversion factor:
- 1 Fahrenheit = 460.67 Rankine
- °Ra = °F + 459.67
°F → °Ra Quick Converter
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What is Fahrenheit (°F)?
The degree Fahrenheit (°F) is a temperature unit in the US customary system. On this scale, the freezing point of water is 32 °F and the boiling point is 212 °F — exactly 180 degrees apart.
What is Rankine (°Ra)?
The degree Rankine (°R) is an absolute temperature scale using Fahrenheit-sized increments.
How to Convert Fahrenheit to Rankine
Example
Convert 10 °F to °Ra:
10 °F = 469.67 °Ra
Fahrenheit to Rankine Conversion Table
Values from -40 to 500 °F.
Frequently Asked Questions
How do I convert Fahrenheit to Rankine?
Simply add 459.67 to the Fahrenheit value. For example, 32°F + 459.67 = 491.67°Ra. The Rankine scale is offset from Fahrenheit by exactly 459.67 degrees.
What is 0°F in Rankine?
0°F equals 459.67°Ra. Unlike the Kelvin scale which uses Celsius-sized degrees, Rankine uses Fahrenheit-sized degrees but starts at absolute zero.
What is absolute zero in Fahrenheit?
Absolute zero is -459.67°F, which equals 0°Ra. This is the lowest possible temperature where all molecular motion stops. The offset of 459.67 is the key to converting between Fahrenheit and Rankine.
What is the relationship between Rankine and Kelvin?
Both Rankine and Kelvin start at absolute zero, but Rankine uses Fahrenheit-sized degrees while Kelvin uses Celsius-sized degrees. The conversion is: °Ra = K × 9/5, or equivalently, K = °Ra × 5/9.
Why is the Fahrenheit to Rankine conversion so simple?
The conversion is simple because Rankine and Fahrenheit use the same degree size. Rankine is just Fahrenheit shifted so that 0 is at absolute zero. This is analogous to the Celsius-to-Kelvin conversion, which is also a simple addition (add 273.15).
