Convert Rankine to Réaumur
Degrees Rankine to degrees Réaumur. Enter a value to convert, or use the Rankine to Réaumur chart further down the page.
Degrees Rankine and degrees Réaumur are measured on scales with different zero points, so the conversion needs a formula rather than a single factor.
How to convert Rankine to Réaumur
Degrees Rankine and degrees Réaumur use different zero points, so you cannot convert them with a single multiplication. Apply the formula °Ré = (°R − 491.67) × 4/9 instead.
°Ré = (°R − 491.67) × 4/9
Worked example
Convert 500 °R to degrees Réaumur:
500 °R = 3.702222222 °Ré
Rankine to Réaumur conversion chart
Use this Rankine to Réaumur table for quick reference without typing anything.
| degrees Rankine (°R) | degrees Réaumur (°Ré) |
|---|---|
| 0 °R | -218.52 °Ré |
| 100 °R | -174.0755556 °Ré |
| 300 °R | -85.18666667 °Ré |
| 491.67 °R | 0 °Ré |
| 500 °R | 3.702222222 °Ré |
| 527.67 °R | 16 °Ré |
| 559.67 °R | 30.22222222 °Ré |
| 671.67 °R | 80 °Ré |
What is a degree Rankine?
Rankine is an absolute scale that uses Fahrenheit-sized degrees. It starts at absolute zero, so 0 °R equals −459.67 °F.
What is a degree Réaumur?
The Réaumur scale sets water’s freezing point at 0 °Ré and its boiling point at 80 °Ré. It is largely historical but survives in some cheese and syrup making.
Frequently asked questions
How many Réaumur are in a degree Rankine?
Degrees Rankine and degrees Réaumur have no fixed ratio, because the two scales start at different zero points. Convert between them with °Ré = (°R − 491.67) × 4/9 instead of multiplying by a single number.
How do you convert Rankine to Réaumur?
Degrees Rankine and degrees Réaumur use different zero points, so you cannot convert them with a single multiplication. Apply the formula °Ré = (°R − 491.67) × 4/9 instead.
What is 10 Rankine in Réaumur?
10 Rankine equals -214.0755556 Réaumur. The conversion chart on this page lists the other values people look up most often.
Related temperature conversions
Convert Rankine to other units
Convert other units to Réaumur
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