Rankine is an absolute Fahrenheit-based temperature scale.
Rankines to Reaumurs Converter — R to Re
Convert Rankine (R) to Reaumur (Re) using the exact temperature formula. See the formula, worked examples, and conversion table.
Rankines to Reaumurs converter
Converter
Temperature Converter
Convert Celsius, Fahrenheit, Kelvin, Rankine, Delisle, Newton, Reaumur, and Romer.
Context values
Some unit families need one extra value for a physically accurate result.
Reaumur is a historical temperature scale.
Convert the source temperature to Kelvin, then convert Kelvin to the target scale.
Temperature conversion uses Kelvin as the intermediate absolute scale.
Reserved above the conversion cards and below the converter.
About Converting Rankines to Reaumurs
Rankine and Reaumur are both historical temperature scales no longer in everyday use — this conversion is mainly useful for historical reference or comparing older scientific texts against each other.
Formula
Convert the source temperature to Kelvin, then convert Kelvin to the target scale.
Both scales are converted through Kelvin as a common absolute reference point.
Simple example
(0 − 32) × 5/9 = -218.52 °C
0 rankines = -218.52 reaumurs.
Real-world example
(0 − 32) × 5/9 = -218.52 °C
0 rankines = -218.52 reaumurs.
Conversion table
| Rankine (R) | Reaumur (Re) |
|---|---|
| -40 R | -236.2977778 Re |
| -20 R | -227.4088889 Re |
| 0 R | -218.52 Re |
| 20 R | -209.6311111 Re |
| 37 R | -202.0755556 Re |
| 100 R | -174.0755556 Re |
Reverse conversion: Reaumur to Rankine
(-218.0755556 − 32) × 5/9 = 0.9999999 °C
-218.0755556 reaumurs = 0.9999999 rankines.
Convert the source temperature to Kelvin, then convert Kelvin to the target scale.
For a page dedicated to this direction, see Reaumur to Rankine.
Understanding the Rankine (R)
Rankine is an absolute Fahrenheit-based temperature scale.
Understanding the Reaumur (Re)
Reaumur is a historical temperature scale.
Reserved between the cards and the FAQ so the page stays balanced.
Frequently asked questions
How many reaumurs are in 1 rankine?
1 rankine equals -218.0755556 reaumurs, using the offset temperature formula rather than an estimate.
How do I convert rankine to reaumur?
Use the formula shown above: it involves both a multiplication and an addition/subtraction because the two scales don't share a common zero point.
How do I convert reaumur back to rankine?
Use the reverse factor: 1 reaumur equals 493.92 rankines. You can also use the swap control in the converter above to flip the direction instantly.
What is a rankine?
Rankine (R) is a unit of temperature.
What is a reaumur?
Reaumur (Re) is a unit of temperature.
Is the Rankine to Reaumur conversion exact?
Yes. Both scales are formally defined relative to the Kelvin scale, so the conversion formula is exact — the only rounding involved is in how many decimal places you choose to display.