EngiRef / Temperature conversion
Convert Degrees Rankine to Degrees Fahrenheit (°R to °F)
°F = °R × 1 - 459.67. Convert degrees Rankine to degrees Fahrenheit with the exact formula, a common-values table and a free converter.
Conversion formula
°F = °R × 1 - 459.67
Temperature scales set their zero in different places, so this is an offset conversion, not a ratio. There is no single number you can multiply by: °R 0 is -459.67 °F, and doubling the input does not double the result. Apply the multiplier, then the offset, in that order.
°R to °F table
| Degrees Rankine (°R) | Degrees Fahrenheit (°F) |
|---|---|
| 0 °R | -459.67 °F |
| 1 °R | -458.67 °F |
| 2 °R | -457.67 °F |
| 5 °R | -454.67 °F |
| 10 °R | -449.67 °F |
| 20 °R | -439.67 °F |
| 50 °R | -409.67 °F |
| 100 °R | -359.67 °F |
Every figure is computed at build time by the site’s own converter from the temperature unit registry. For a value that is not listed, put it into the interactive converter.
Frequently asked questions
What is 1 °R in °F?
1 °R is -458.67 °F. Because temperature scales are offset rather than proportional, this figure is not a multiplier: 100 °R is -359.67 °F, not 100 times -458.67.
What is the formula to convert degrees Rankine to degrees Fahrenheit?
°F = °R × 1 - 459.67. Apply the multiplier first, then the offset. Every value in the table on this page is computed with that formula by the same converter the tool below runs.
How do I convert degrees Fahrenheit back to degrees Rankine?
Use the inverse formula, °R = °F × 1 + 459.67. The °F to °R page carries the same table in that direction.