Convert Rankine to Celsius
Instantly convert Rankine (°R) to Celsius (°C). Free and accurate.
About This Conversion
What is a Rankine to Celsius conversion?
One rankine (°R) is equal to -272.59444444 celsius (°C). This relationship is fixed by international measurement standards and does not change. To convert any number of rankine to celsius, multiply your value by -272.59444444; to go the other way, divide by -272.59444444.
How to convert Rankine to Celsius
The conversion formula is: °C = (°R − 491.67) × 5/9. Enter any value into the converter above and the result updates instantly. The formula is also shown alongside the answer so you can check the working or use it in your own calculations.
Where is this conversion used?
Temperature conversions matter in cooking, meteorology, medicine, chemistry, and international travel. Celsius is the standard in most countries, while the United States uses Fahrenheit; Kelvin is used in scientific contexts. Meteorologists, chefs, doctors, chemists, and HVAC engineers all work with temperature conversions. A quick mental shortcut: to convert Celsius to Fahrenheit, double the Celsius value and add 30 (for an approximation); for precision, multiply by 9/5 and add 32.
Helpful tip
Absolute zero — the coldest possible temperature — is 0 K, which equals −273.15 °C or −459.67 °F. No physical system can reach or go below this point.
Formula
°C = (°R − 491.67) × 5/9
°R to °C Conversion Table
| °R | °C |
|---|---|
| 0.1 °R | -273.09444444 °C |
| 0.5 °R | -272.87222222 °C |
| 1 °R | -272.59444444 °C |
| 2 °R | -272.03888889 °C |
| 5 °R | -270.37222222 °C |
| 10 °R | -267.59444444 °C |
| 20 °R | -262.03888889 °C |
| 25 °R | -259.26111111 °C |
| 50 °R | -245.37222222 °C |
| 100 °R | -217.59444444 °C |
| 250 °R | -134.26111111 °C |
| 500 °R | 4.62777778 °C |
| 1000 °R | 282.40555556 °C |