0 degrees Fahrenheit is equal to 459.67 degrees Rankine.
Table of Contents
The conversion from Fahrenheit (f) to Rankine (r) involves adding 459.67 to the Fahrenheit value. Since Rankine scale starts at absolute zero just like Kelvin but uses Fahrenheit increments, the zero point differs. Therefore, 0°F plus 459.67 equals 459.67°R.
Conversion Tool
Result in r:
Conversion Formula
The formula to convert Fahrenheit to Rankine is:
R = F + 459.67
This formula works because the Rankine scale starts at absolute zero, which is -459.67°F. So, to convert any Fahrenheit temperature to Rankine, you add 459.67 to shift the zero point. Unlike Celsius to Kelvin, where you add 273.15, here you add 459.67 because Fahrenheit degrees are smaller.
Step-by-step example:
- Given F = 0
- Calculate R = 0 + 459.67 = 459.67
- The temperature in Rankine is 459.67°R
Conversion Example
- Convert 32°F to Rankine:
- Start with F = 32
- Add 459.67: 32 + 459.67 = 491.67
- Result: 491.67°R
- Convert -40°F to Rankine:
- F = -40
- Calculate R: -40 + 459.67 = 419.67
- Answer: 419.67°R
- Convert 100°F to Rankine:
- F = 100
- Add 459.67: 100 + 459.67 = 559.67
- Final: 559.67°R
- Convert -10°F to Rankine:
- F = -10
- Calculate: -10 + 459.67 = 449.67
- Result: 449.67°R
Conversion Chart
| Fahrenheit (°F) | Rankine (°R) |
|---|---|
| -25.0 | 434.67 |
| -20.0 | 439.67 |
| -15.0 | 444.67 |
| -10.0 | 449.67 |
| -5.0 | 454.67 |
| 0.0 | 459.67 |
| 5.0 | 464.67 |
| 10.0 | 469.67 |
| 15.0 | 474.67 |
| 20.0 | 479.67 |
| 25.0 | 484.67 |
To use the chart, find the Fahrenheit temperature in the left column and read across to the right to see the equivalent Rankine temperature. This helps quickly compare temperatures without calculation.
Related Conversion Questions
- What is the Rankine equivalent of zero degrees Fahrenheit?
- How do you convert 0°F to Rankine manually?
- Why does converting 0 Fahrenheit to Rankine add 459.67?
- Is 0°F above absolute zero in Rankine scale?
- What rankine temperature corresponds to freezing point in Fahrenheit?
- How accurate is the conversion from 0°F to Rankine using the formula?
- Can 0 degrees Fahrenheit be negative in Rankine scale?
Conversion Definitions
Fahrenheit (f): Fahrenheit is a temperature scale where water freezes at 32 degrees and boils at 212 degrees under sea level pressure. It is used mainly in the United States and some Caribbean countries for daily temperature measurement. The scale divides the interval between freezing and boiling into 180 degrees.
Rankine (r): Rankine is an absolute temperature scale used in engineering fields, especially thermodynamics. It starts at absolute zero, like Kelvin, but uses Fahrenheit degree increments. Zero Rankine is the lowest possible temperature, -459.67°F, and the scale increases positively from there.
Conversion FAQs
Can Rankine values be negative when converting from Fahrenheit?
No, Rankine is an absolute temperature scale starting at absolute zero, which corresponds to -459.67°F. Since 0°F plus 459.67 is positive, Rankine temperatures from Fahrenheit values are never negative. Negative Rankine values would represent impossible physical temperatures below absolute zero.
Why is the addition constant 459.67 in the conversion?
The constant 459.67 comes from the difference between zero degrees Fahrenheit and absolute zero on the Fahrenheit scale. Absolute zero is -459.67°F, so to convert Fahrenheit to Rankine, you shift the scale by adding 459.67, aligning it to absolute zero.
Is the Rankine scale used outside of engineering?
Rankine scale is rare outside engineering and thermodynamics. It mainly appears in scientific calculations involving heat and energy where absolute temperature is needed but Fahrenheit increments are preferred over Celsius. For everyday use, Fahrenheit and Celsius are more common.
Does converting 0°F to Rankine help in scientific calculations?
Yes, converting to Rankine provides an absolute temperature measure needed for thermodynamic equations and efficiency calculations. Since Rankine uses Fahrenheit increments, it simplifies calculations in systems that use Fahrenheit for temperature measurements.
What would happen if I subtract instead of add 459.67 when converting?
If you subtract 459.67 instead of adding, the result would not be a correct Rankine temperature, often negative or meaningless physically. The formula requires addition to shift the zero point from Fahrenheit scale to absolute zero rankine scale.