How many degree Rømer in 1 degree Celsius?
The answer is 0.525.
We assume you are converting between degree Rømer and degree Celsius.
You can view more details on each measurement unit: degree Rømer or
degree Celsius
The SI base unit for temperature is the kelvin.
1 kelvin is equal to 0.525 degree Rømer, or 1 degree Celsius.
Note that rounding errors may occur, so always check the results.
Use this page to learn how to convert between degrees Rømer and degrees Celsius.
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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.

››Definition: Celsius

The degree Celsius (°C) is a unit of temperature named after the Swedish astronomer Anders Celsius (1701–1744), who first proposed a similar system in 1742. The Celsius temperature scale was designed so that the freezing point of water is 0 degrees, and the boiling point is 100 degrees at standard atmospheric pressure.

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