Quick Answer:
°R = °F + 459.67. To convert Fahrenheit to Rankine, add 459.67 to the Fahrenheit value.
Fahrenheit and Rankine are both based on the Fahrenheit degree, so the conversion is a simple offset.
Detailed Overview: Fahrenheit to Rankine
The Fahrenheit scale sets 32°F at water’s freezing point. The Rankine scale is an absolute temperature scale starting at absolute zero, using Fahrenheit-sized degrees. Formula: °R = °F + 459.67. Reverse: °F = °R – 459.67. Used in US engineering thermodynamics and power plant calculations. Absolute zero is 0°R or -459.67°F.
Conversion Reference Table
-459.67°F = 0°R, 0°F = 459.67°R, 32°F = 491.67°R, 68°F = 527.67°R, 212°F = 671.67°R, 1000°F = 1459.67°R
Practical Calculation Example
Convert 77°F: °R = 77 + 459.67 = 536.67°R. Reverse: 900°R = 900 – 459.67 = 440.33°F
Key Takeaways
°R = °F + 459.67. Add 459.67 to Fahrenheit for Rankine. Subtract 459.67 from Rankine for Fahrenheit.
THE AUTORANK Editorial Note: Since both scales share the same degree size, converting Fahrenheit to Rankine only requires adding 459.67 with no multiplication.
Frequently Asked Questions
Q: How do I convert Fahrenheit to Rankine quickly?
A: Add 460 to the Fahrenheit value for a fast estimate. Example: 70°F + 460 = 530°R, close to the exact 529.67°R.
A: Add 460 to the Fahrenheit value for a fast estimate. Example: 70°F + 460 = 530°R, close to the exact 529.67°R.
Q: Is 0°F equal to 0°R?
A: No, 0°F equals 459.67°R. Only -459.67°F equals 0°R, absolute zero.
A: No, 0°F equals 459.67°R. Only -459.67°F equals 0°R, absolute zero.
The Fahrenheit to Rankine offset of 459.67 is essential for US engineering thermodynamics.
Related Converters: Rankine to Fahrenheit | Fahrenheit to Kelvin