66°F is equal to 525.67° Rankine.
To convert Fahrenheit to Rankine, you add 459.67 to the Fahrenheit temperature. This is because the Rankine scale starts at absolute zero like Kelvin, but uses Fahrenheit degrees. So, 66°F plus 459.67 gives the Rankine value.
Conversion Tool
Result in rankine:
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°F. Unlike Celsius to Kelvin conversion where you add 273.15, here Fahrenheit degrees are used instead of Celsius degrees, so you just add 459.67.
Example:
- Given: 66°F
- Add 459.67: 66 + 459.67 = 525.67°R
- So, 66°F equals 525.67° Rankine.
Conversion Example
- Example 1: Convert 32°F to Rankine
- Start with 32°F (freezing point of water on Fahrenheit scale).
- Add 459.67: 32 + 459.67 = 491.67°R
- Result: 32°F = 491.67° Rankine.
- Example 2: Convert 100°F to Rankine
- Start with 100°F (warm day temperature).
- Add 459.67: 100 + 459.67 = 559.67°R
- Result: 100°F = 559.67° Rankine.
- Example 3: Convert 0°F to Rankine
- Start with 0°F (cold temperature).
- Add 459.67: 0 + 459.67 = 459.67°R
- Result: 0°F = 459.67° Rankine.
- Example 4: Convert 75.5°F to Rankine
- Start with 75.5°F (room temperature).
- Add 459.67: 75.5 + 459.67 = 535.17°R
- Result: 75.5°F = 535.17° Rankine.
Conversion Chart
The chart below shows Fahrenheit values with their equivalent Rankine values, making it easier to quickly find conversions without calculations.
| Fahrenheit (°F) | Rankine (°R) |
|---|---|
| 41.0 | 500.67 |
| 46.0 | 505.67 |
| 51.0 | 510.67 |
| 56.0 | 515.67 |
| 61.0 | 520.67 |
| 66.0 | 525.67 |
| 71.0 | 530.67 |
| 76.0 | 535.67 |
| 81.0 | 540.67 |
| 86.0 | 545.67 |
| 91.0 | 550.67 |
To use the chart, find the Fahrenheit value in the left column and read across to the right to see the corresponding Rankine value.
Related Conversion Questions
- How do I convert 66 degrees Fahrenheit into Rankine scale?
- What is 66°F expressed in Rankine units?
- Can you show the formula to change 66 Fahrenheit to Rankine?
- Why do I add 459.67 when converting from Fahrenheit to Rankine for 66 degrees?
- Is 66°F hotter or colder than 525 Rankine?
- How accurate is the conversion from 66 Fahrenheit to Rankine?
- What equals 66°F in Rankine temperature measure?
Conversion Definitions
Fahrenheit (°F): Fahrenheit is a temperature scale where water freezes at 32 degrees and boils at 212 degrees under standard atmospheric pressure. It is widely used in the United States and a few other countries for weather forecasts, cooking, and industrial processes. The scale divides the range between freezing and boiling water into 180 equal parts.
Rankine (°R): Rankine is an absolute temperature scale based on Fahrenheit degrees, starting at absolute zero, which is the lowest limit of thermodynamic temperature. Rankine is used primarily in engineering systems involving thermodynamics in the United States. Like Kelvin, it measures absolute temperature but increments in Fahrenheit degrees.
Conversion FAQs
Why do I need to add exactly 459.67 when converting Fahrenheit to Rankine?
The value 459.67 represents the offset between the zero points of the Fahrenheit scale and absolute zero. Since Rankine is an absolute scale starting at absolute zero, adding 459.67 shifts the Fahrenheit value to align with this starting point.
Can the Rankine scale have negative values?
No, Rankine is an absolute temperature scale, which means its zero value corresponds to absolute zero—the lowest possible temperature. Therefore, Rankine values cannot go below zero, unlike Fahrenheit, which can be negative.
Is Rankine used outside the US?
Rankine is mostly used in the United States, especially in engineering and thermodynamics. Other countries prefer Kelvin or Celsius scales. Rankine is less common internationally but remains in use where Fahrenheit-based absolute temperature is needed.
Can I convert Rankine back to Fahrenheit?
Yes, converting Rankine to Fahrenheit is simple by subtracting 459.67 from the Rankine value. For example, 525.67°R minus 459.67 equals 66°F. This inverse relation makes switching between the two straightforward.
Is the Rankine scale related to Kelvin?
Rankine and Kelvin both start at absolute zero, but Rankine uses Fahrenheit increments while Kelvin uses Celsius increments. This means Rankine degrees are smaller than Kelvin degrees by a factor of 5/9, but both scales measure absolute temperature.