Convert Degrees Rankine to degrees Celsius

1 degree Rankine = -272.59 degrees Celsius · °C = (°R − 491.67) × 5/9

°R
Degrees Celsius
-272.59°C

1 degree Rankine = -272.59 degrees Celsius

When you need this conversion

Rankine is an absolute temperature scale built on Fahrenheit degrees, so it shows up almost exclusively in US thermodynamics and mechanical engineering coursework. Like Kelvin, it starts at absolute zero, which is required for gas law and heat cycle calculations.

Degrees Rankine to degrees Celsius conversion table

Conversion table from degrees Rankine to degrees Celsius
Degrees Rankine (°R)Degrees Celsius (°C)
-40 °R-295.37 °C
-20 °R-284.26 °C
-10 °R-278.71 °C
0 °R-273.15 °C
10 °R-267.59 °C
20 °R-262.04 °C
25 °R-259.26 °C
30 °R-256.48 °C
37 °R-252.59 °C
50 °R-245.37 °C
75 °R-231.48 °C
100 °R-217.59 °C
150 °R-189.82 °C
200 °R-162.04 °C

The formula

°C = (°R − 491.67) × 5/9

Temperature scales do not share a common zero point, so converting degrees Rankine to degrees Celsius requires both a scaling step and an offset rather than a single multiplication.

Convert the other way

Degrees Celsius to degrees Rankine →

Related temperature conversions

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Frequently asked questions

How many degrees Celsius are in a degree Rankine?
There are -272.59 degrees Celsius in 1 degree Rankine. The formula is °C = (°R − 491.67) × 5/9.
How do you convert degrees Rankine to degrees Celsius?
Use the formula °C = (°R − 491.67) × 5/9. For example, 10 degrees Rankine equals -267.59 degrees Celsius.
Is the degrees Rankine to degrees Celsius conversion exact?
Yes. The degrees Rankine to degrees Celsius conversion is defined exactly by the temperature scales, so there is no rounding in the underlying relationship. Displayed results are rounded for readability.
What is °R short for?
°R is the standard symbol for degree Rankine. °C is the symbol for degree Celsius.