Convert Rankine to Celsius

Enter a value in rankine to convert it to celsius. The result updates instantly and includes the formula and calculation steps.

Rankine to Celsius calculator

to
°R
Celsius
°C

Rankine to Celsius formula

Use this formula to convert rankine to celsius:

Celsius = Rankine * 5 / 9 - 273.15

Calculation

Enter a valid number above to see the formula with your value substituted step by step.

Rankine to Celsius Conversion Table

Reference values for converting Rankine to Celsius.

Rankine (°R)Celsius (°C)
0 °R-273.15 °C
1 °R-272.5944 °C
2 °R-272.0389 °C
5 °R-270.3722 °C
10 °R-267.5944 °C
20 °R-262.0389 °C
50 °R-245.3722 °C
100 °R-217.5944 °C

Worked example

Convert 1000 Rankine to Celsius

Celsius = 1000 × 5 / 9 - 273.15 = 282.4056 Celsius

About these units

Rankine

The Rankine scale is an absolute temperature scale named after the Scottish engineer and physicist William John Macquorn Rankine. Similar to the Kelvin scale, the Rankine scale starts at absolute zero, with each degree Rankine equal to one degree Fahrenheit. This scale is primarily used in thermodynamics and engineering, particularly in the United States. The freezing point of water on the Rankine scale is 491.67 °R, and the boiling point is 671.67 °R.

Celsius

Celsius is a unit of temperature measurement that is part of the metric system. It is named after the Swedish astronomer Anders Celsius, who developed the scale. The Celsius scale sets the freezing point of water at 0 degrees and the boiling point at 100 degrees under standard atmospheric pressure. It is widely used in scientific and everyday contexts around the world.

Frequently asked questions

Is 491.67 Rankine equal to 0 degrees Celsius?
Yes, 491.67°R is equivalent to 0°C, which is the freezing point of water.
What is the difference between Rankine and Celsius scales?
Rankine is an absolute temperature scale based on Fahrenheit degrees, used mainly in engineering fields in the U.S., while Celsius is a metric scale where water freezes at 0°C and boils at 100°C.
Why do we subtract 491.67 and multiply by \( \dfrac{5}{9} \) to convert Rankine to Celsius?
Subtracting 491.67 adjusts for the zero point difference, and multiplying by \( \dfrac{5}{9} \) converts the temperature change from Rankine (Fahrenheit scale) to Celsius degrees.