Degrees Rankine to Degrees Fahrenheit Converter (°R to °F)
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Formula
To convert degrees Rankine to degrees Fahrenheit, use the formula °F = °R − 459.67.
°F = °R − 459.67
Example calculation
Convert 25 °R to °F:
25 °R → °F = °R − 459.67 → -434.67 °F
Conversion table
| °R | °F |
|---|---|
| 1 | -458.6700 |
| 2 | -457.6700 |
| 3 | -456.6700 |
| 4 | -455.6700 |
| 5 | -454.6700 |
| 6 | -453.6700 |
| 7 | -452.6700 |
| 8 | -451.6700 |
| 9 | -450.6700 |
| 10 | -449.6700 |
| 15 | -444.6700 |
| 20 | -439.6700 |
| 25 | -434.6700 |
| 30 | -429.6700 |
| 35 | -424.6700 |
| 40 | -419.6700 |
| 45 | -414.6700 |
| 50 | -409.6700 |
| 55 | -404.6700 |
| 60 | -399.6700 |
| 65 | -394.6700 |
| 70 | -389.6700 |
| 75 | -384.6700 |
| 80 | -379.6700 |
| 85 | -374.6700 |
| 90 | -369.6700 |
| 95 | -364.6700 |
| 100 | -359.6700 |
| 200 | -259.6700 |
| 500 | 40.3300 |
| 1000 | 540.3300 |
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Kelvin and Rankine start at absolute zero, so negative values are physically impossible.
About the units
- Degree Rankine (°R)
- An absolute scale using Fahrenheit-sized degrees, zero at absolute zero. Used in some US thermodynamics and engineering work.
- Degree Fahrenheit (°F)
- Used for everyday temperatures in the US and a few other countries. Proposed by Daniel Fahrenheit in 1724; water freezes at 32 °F and boils at 212 °F.
Frequently asked questions
- How do I convert degrees Rankine to degrees Fahrenheit?
- To convert degrees Rankine to degrees Fahrenheit, use the formula °F = °R − 459.67.
- How many degrees Fahrenheit are in 1 degree Rankine?
- 1 degree Rankine equals -458.67 °F.
- How many degrees Fahrenheit are in 10 degrees Rankine?
- 10 °R equals -449.67 °F.
- How do I convert degrees Fahrenheit back to degrees Rankine?
- Use the reverse converter: 1 degree Fahrenheit equals 460.67 °R.
- Is this converter accurate?
- Yes. It uses the exact SI/NIST definitions of each unit and shows up to 6 significant digits.
Related conversions
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