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Single conversion
To convert from degree Fahrenheit (F) to degree Rankine (R), use the following formula:
Let's convert 5 degree Fahrenheit (F) to degree Rankine (R).
Using the formula:
Therefore, 5 degree Fahrenheit (F) is equal to degree Rankine (R).
Here are some quick reference conversions from degree Fahrenheit (F) to degree Rankine (R):
| degrees Fahrenheit | degrees Rankine |
|---|---|
| 0.000001 F | R |
| 0.001 F | R |
| 0.1 F | R |
| 1 F | R |
| 2 F | R |
| 3 F | R |
| 4 F | R |
| 5 F | R |
| 6 F | R |
| 7 F | R |
| 8 F | R |
| 9 F | R |
| 10 F | R |
| 20 F | R |
| 30 F | R |
| 40 F | R |
| 50 F | R |
| 100 F | R |
| 1000 F | R |
| 10000 F | R |
For all Temperature converters, choose units using the From/To dropdowns above.
A degree Fahrenheit (°F) is the unit of temperature used in the imperial system of measurement.
The Fahrenheit scale was created in 1724 by the German physicist Daniel Gabriel Fahrenheit. He based his scale on three fixed points:
While most of the world has adopted the Celsius scale for everyday temperature measurement, the Fahrenheit scale remains the official scale in the United States, its territories (like Puerto Rico and Guam), and a few other countries, including the Bahamas, Palau, and the Cayman Islands.
In the United Kingdom, both Fahrenheit and Celsius are used to describe temperature; Fahrenheit remains more familiar to older people and is often heard in casual conversation.
You can easily convert any temperature from Fahrenheit to Celsius using a simple formula. To convert a temperature from Fahrenheit (F) to Celsius (C), subtract 32 from the Fahrenheit temperature and then multiply the result by 5/9.
The Fahrenheit to Celsius formula is: C = (F − 32) × 5/9
For example, to convert a pleasant day of 77 °F to Celsius: C = (77 − 32) × 5/9 = 45 × 5/9 = 25 °C
The Rankine scale (°R) is a temperature measurement system built on absolute zero, much like the Kelvin scale. However, Rankine is specifically designed to work with the Fahrenheit system. Think of it as the Fahrenheit version of Kelvin, used primarily by engineers in the United States.
The Rankine scale is an absolute temperature scale, meaning its starting point—0 °R—is absolute zero. This is the coldest possible temperature in the universe, where all atomic and molecular motion stops completely.
Unlike scales such as Celsius and Fahrenheit, which have arbitrary zero points, absolute scales begin at true zero. This distinction is vital in science and engineering, particularly when a calculation requires dividing one temperature by another.
Since Fahrenheit and Rankine share the same degree size, a change of 1°F is equivalent to a shift in 1°R.
To convert Fahrenheit (°F) to Rankine (°R), add 459.67 to the Fahrenheit value.
Formula: °R = °F + 459.67
Example: Water freezes at 32 °F. To find this on the Rankine scale, you would calculate: 32 + 459.67 = 491.67 °R
The Rankine scale is an absolute temperature scale that is comparable to the Kelvin scale. Its zero point, 0 °R, represents absolute zero, which is the theoretical temperature where all molecular movement comes to a halt.
Unlike relative scales such as Fahrenheit or Celsius, which have arbitrary zero points (like the freezing point of water), Rankine starts from a true fundamental zero.
You will almost exclusively find the Rankine scale in engineering and thermodynamics fields within the United States.
Many scientific laws, especially those related to gases and energy efficiency (such as the Ideal Gas Law), require an absolute temperature to yield accurate results.
Rankine allows engineers working with imperial units (feet, pounds, Fahrenheit) to perform these critical calculations without first converting everything to Kelvin, which is the absolute scale for the metric system. It streamlines their workflow by keeping all units consistent.