Convert Réaumur to Rankine
Degrees Réaumur to degrees Rankine. Enter a value to convert, or use the Réaumur to Rankine chart further down the page.
Degrees Réaumur and degrees Rankine are measured on scales with different zero points, so the conversion needs a formula rather than a single factor.
How to convert Réaumur to Rankine
Degrees Réaumur and degrees Rankine use different zero points, so you cannot convert them with a single multiplication. Apply the formula °R = °Ré × 9/4 + 491.67 instead.
°R = °Ré × 9/4 + 491.67
Worked example
Convert 20 °Ré to degrees Rankine:
20 °Ré = 536.67 °R
Réaumur to Rankine conversion chart
Use this Réaumur to Rankine table for quick reference without typing anything.
| degrees Réaumur (°Ré) | degrees Rankine (°R) |
|---|---|
| -40 °Ré | 401.67 °R |
| -20 °Ré | 446.67 °R |
| -10 °Ré | 469.17 °R |
| 0 °Ré | 491.67 °R |
| 10 °Ré | 514.17 °R |
| 20 °Ré | 536.67 °R |
| 30 °Ré | 559.17 °R |
| 40 °Ré | 581.67 °R |
| 60 °Ré | 626.67 °R |
| 80 °Ré | 671.67 °R |
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.
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.
Frequently asked questions
How many Rankine are in a degree Réaumur?
Degrees Réaumur and degrees Rankine have no fixed ratio, because the two scales start at different zero points. Convert between them with °R = °Ré × 9/4 + 491.67 instead of multiplying by a single number.
How do you convert Réaumur to Rankine?
Degrees Réaumur and degrees Rankine use different zero points, so you cannot convert them with a single multiplication. Apply the formula °R = °Ré × 9/4 + 491.67 instead.
What is 10 Réaumur in Rankine?
10 Réaumur equals 514.17 Rankine. The conversion chart on this page lists the other values people look up most often.
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