Converting 80 Fahrenheit to Rankine gives us 560 Rankine.
Since Rankine scale starts at absolute zero like Kelvin but uses Fahrenheit degrees, you simply add 459.67 to the Fahrenheit temperature. For 80°F, adding 459.67 results in 560.67 Rankine, which is the exact conversion.
Conversion Result and Explanation
80 Fahrenheit equals 560.67 Rankine. To convert Fahrenheit to Rankine, you add 459.67 because Rankine is an absolute temperature scale based on Fahrenheit degrees. This addition shifts the zero point from the freezing point of water to absolute zero, aligning it with thermodynamic principles.
Conversion Tool
Result in rankine:
Conversion Formula
The formula to convert Fahrenheit to Rankine is simple: Rankine = Fahrenheit + 459.67. This works because the Rankine scale starts at absolute zero (-459.67°F). Adding 459.67 shifts the temperature from the Fahrenheit scale to the absolute temperature scale, maintaining proportionality.
For example, if Fahrenheit is 80°F, then Rankine is 80 + 459.67, which equals 560.67 Rankine. The step-by-step math is straightforward: 80 + 459.67 = 560.67.
Conversion Example
- Convert 50°F to Rankine:
- Start with 50°F.
- Add 459.67 to convert to Rankine.
- 50 + 459.67 = 509.67 Rankine.
- Convert 100°F to Rankine:
- Start with 100°F.
- Add 459.67.
- 100 + 459.67 = 559.67 Rankine.
- Convert 32°F to Rankine:
- Start with 32°F.
- Add 459.67.
- 32 + 459.67 = 491.67 Rankine.
- Convert -20°F to Rankine:
- Start with -20°F.
- Add 459.67.
- -20 + 459.67 = 439.67 Rankine.
Conversion Chart
| Fahrenheit (°F) | Rankine (°R) |
|---|---|
| 55.0 | 514.67 |
| 60.0 | 519.67 |
| 65.0 | 524.67 |
| 70.0 | 529.67 |
| 75.0 | 534.67 |
| 80.0 | 539.67 |
| 85.0 | 544.67 |
| 90.0 | 549.67 |
| 95.0 | 554.67 |
| 100.0 | 559.67 |
| 105.0 | 564.67 |
This chart helps to quickly find the Rankine temperature for a given Fahrenheit value between 55 and 105 degrees. Simply find the Fahrenheit value on the left, and read across for the Rankine equivalent.
Related Conversion Questions
- What is 80 Fahrenheit in Kelvin?
- How do I convert 80°F to Celsius?
- What is the Rankine equivalent of 80°F?
- How many Rankine degrees are in 80 Fahrenheit?
- Is 80°F hotter than 60°F in Rankine?
- What temperature in Rankine corresponds to 80°F at absolute zero?
- Can I convert 80 Fahrenheit directly to Kelvin?
Conversion Definitions
Fahrenheit
Fahrenheit is a temperature scale where water freezes at 32°F and boils at 212°F under standard atmospheric pressure. It is primarily used in the United States for daily temperature measurements, with absolute zero at -459.67°F.
Rankine
Rankine is an absolute temperature scale based on Fahrenheit degrees. Zero Rankine represents absolute zero, and each Rankine degree equals one Fahrenheit degree. It is used mainly in engineering fields involving thermodynamics where Fahrenheit is preferred.
Conversion FAQs
Why do I need to add 459.67 to Fahrenheit to get Rankine?
This addition shifts the zero point from the freezing point of water to absolute zero, aligning the Fahrenheit scale with an absolute temperature scale. It ensures the measurements reflect thermodynamic principles accurately, especially in engineering contexts.
Can I convert Fahrenheit to Rankine without a calculator?
Yes, because the formula is simple: just add 459.67 to the Fahrenheit temperature. For mental calculations or quick estimates, rounding 459.67 to 460 can be helpful, then subtracting if necessary for more precise work.
What physical meaning does Rankine have in thermodynamics?
Rankine measures absolute temperature, which is directly proportional to the average kinetic energy of particles in a system. It is useful in calculations involving heat transfer, thermodynamic cycles, and engine efficiency, especially when using Fahrenheit units.