How many degree Rankine in 1 degree Rømer?
The answer is 3.4285714285714.

We assume you are converting between **degree Rankine** and **degree Rømer**.

You can view more details on each measurement unit:

degree Rankine or
degree Rømer

The SI base unit for **temperature** is the kelvin.

1 kelvin is equal to 1.8 degree Rankine, or 0.525 degree Rømer.

Note that rounding errors may occur, so always check the results.

Use this page to learn how to convert between degrees Rankine and degrees Rømer.

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You can do the reverse unit conversion from degree Rømer to degree Rankine, or enter any two units below:

degree Rankine to Celsius

degree Rankine to Fahrenheit

degree Rankine to newton

degree Rankine to Delisle

degree Rankine to Reaumur

degree Rankine to kelvin

Rankine is a thermodynamic (absolute) temperature scale named after the Scottish engineer and physicist William John Macquorn Rankine, who proposed it in 1859.

The symbol is °R (or °Ra if necessary to distinguish it from the Rømer and Réaumur scales). As with the Kelvin scale (symbol: K), zero on the Rankine scale is absolute zero. The Rankine scale differs from the Kelvin scale in that it uses smaller, degree Fahrenheit-size increments rather than degree Celsius-size increments. A temperature of 459.67 °R is precisely equal to and 0 °F.

Many engineering fields in the U.S. measure thermodynamic temperature using the Rankine scale. However, throughout the scientific world where measurements are made in SI units, thermodynamic temperature is measured in kelvins.

Rømer is a disused temperature scale named after the Danish astronomer Ole Christensen Rømer, who proposed it in 1701.

In this scale, the zero was initially set using freezing brine. The boiling point of water was defined as 60 degrees. Rømer then saw that the freezing point of water fell at roughly one eighth of that value (7.5 degrees), so he used that value as the other fixed point. Thus the unit of this scale, a Rømer degree, is 40/21sts of a kelvin (or of a Celsius degree). The symbol is sometimes given as °R, but since that is also sometimes used for the Rankine scale, the other symbol °Rø is to be preferred. The name should not be confused with Réaumur.

Daniel Gabriel Fahrenheit learned of Rømer's work and visited him in 1708; he improved on the scale, increasing the number of divisions by a factor of four and eventually establishing what is now known as the Fahrenheit scale, in 1724.

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