0 degrees Fahrenheit equals 459.67 degrees Rankine.
The Rankine scale starts at absolute zero, so converting Fahrenheit to Rankine involves adding a constant offset to the Fahrenheit temperature. This means the Rankine value is always higher than the Fahrenheit value by 459.67.
Conversion Tool
Result in r:
Conversion Formula
The formula to convert Fahrenheit (f) to Rankine (r) is:
r = f + 459.67
This works because the Rankine scale starts at absolute zero, which is -459.67 degrees in Fahrenheit. By adding 459.67 to the Fahrenheit temperature, you align it to the Rankine scale, which uses the same degree size as Fahrenheit but begins at absolute zero instead of the freezing point of water.
For example, converting 0°F to Rankine:
- Start with 0°F.
- Add 459.67 to 0 (0 + 459.67).
- The result is 459.67°R.
Conversion Example
- Converting 32°F to Rankine:
- 32 + 459.67 = 491.67°R
- Because 32°F is water freezing point, so in Rankine it is 491.67°R.
- Converting -40°F to Rankine:
- -40 + 459.67 = 419.67°R
- Negative Fahrenheit values still convert by adding 459.67, keeping the Rankine scale positive.
- Converting 100°F to Rankine:
- 100 + 459.67 = 559.67°R
- This is a warm temperature, converted directly by simple addition.
- Converting 212°F to Rankine:
- 212 + 459.67 = 671.67°R
- 212°F corresponds to boiling point of water, shown in Rankine scale.
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 |
Use this chart by finding the Fahrenheit value in the left column and reading across to find the equivalent Rankine temperature on the right. This helps quick conversions without calculation.
Related Conversion Questions
- What does 0 degrees Fahrenheit equal in Rankine?
- How to convert 0°F to Rankine scale correctly?
- Is 0°F the same as 459.67°R?
- Why do we add 459.67 to Fahrenheit to get Rankine?
- What is the Rankine temperature for freezing point if Fahrenheit is 0?
- How does Rankine compare to Fahrenheit at 0 degrees?
- Can you convert negative Fahrenheit values starting at 0 to Rankine?
Conversion Definitions
Fahrenheit (f): A temperature scale where water freezes at 32 degrees and boils at 212 degrees under standard conditions. It is used primarily in the United States and some Caribbean countries. The scale divides the interval between freezing and boiling into 180 equal parts called degrees.
Rankine (r): An absolute temperature scale used mostly in engineering fields, especially thermodynamics. Starting at absolute zero, it uses the same degree size as Fahrenheit. This scale is convenient for calculations involving heat and thermodynamic temperature conversions.
Conversion FAQs
Why do we add 459.67 to Fahrenheit to get Rankine?
Because Rankine scale starts at absolute zero, which is -459.67°F. Adding 459.67 shifts the Fahrenheit value so it aligns to absolute zero. This makes Rankine temperatures always positive and useful in thermodynamic calculations where absolute temperature matters.
Can Rankine values be negative if Fahrenheit is negative?
No, Rankine values cannot be negative because the scale starts at absolute zero. Even if Fahrenheit is negative, adding 459.67 keeps the Rankine temperature positive or zero. Negative Rankine values do not exist physically.
Is Rankine used outside the United States?
Rankine is rarely used outside the US. It’s mainly found in American engineering contexts, especially in aerospace and thermodynamics. Other countries prefer Kelvin for absolute temperature scales, but Rankine matches Fahrenheit degree increments.
Does the size of a degree in Rankine differ from Fahrenheit?
No, both Rankine and Fahrenheit degree increments are equal in size. The only difference is their starting points; Rankine begins at absolute zero while Fahrenheit starts at the freezing point of water. This means the numeric difference between two temperatures is the same in both scales.
How precise is converting Fahrenheit to Rankine?
Conversion is exact mathematically as it’s simple addition of 459.67. However, practical precision depends on measurement tools. The formula doesn’t introduce error but rounding may occur when displaying decimal places.
Last Updated : 22 June, 2025
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Sandeep Bhandari holds a Bachelor of Engineering in Computers from Thapar University (2006). He has 20 years of experience in the technology field. He has a keen interest in various technical fields, including database systems, computer networks, and programming. You can read more about him on his bio page.