Convert Rankine to Celsius
30 °R = -256.4833 °C
°C = (°R − 491.67) × 5/9Convert Rankine to Celsius instantly — type in either box and it works both ways.
How to convert Rankine to Celsius
To convert degrees Rankine to degrees Celsius, subtract 491.67, then multiply by 5/9.
°C = (°R − 491.67) × 5/9
Example: convert 30 °R to °C
- (30 − 491.67) × 5/9 = -256.4833
- 30 °R = -256.4833 °C
Rankine to Celsius conversion chart
| Degrees Rankine (°R) | Degrees Celsius (°C) |
|---|---|
| -40 °R | -295.3722 °C |
| -20 °R | -284.2611 °C |
| -10 °R | -278.7056 °C |
| 0 °R | -273.15 °C |
| 10 °R | -267.5944 °C |
| 20 °R | -262.0389 °C |
| 25 °R | -259.2611 °C |
| 30 °R | -256.4833 °C |
| 37 °R | -252.5944 °C |
| 40 °R | -250.9278 °C |
| 50 °R | -245.3722 °C |
| 100 °R | -217.5944 °C |
| 150 °R | -189.8167 °C |
| 180 °R | -173.15 °C |
| 200 °R | -162.0389 °C |
Frequently asked questions
How do you convert Rankine to Celsius?
To convert degrees Rankine to degrees Celsius, subtract 491.67, then multiply by 5/9. The formula is °C = (°R − 491.67) × 5/9.
How many degrees Celsius are in one Rankine?
1 °R = -272.5944 °C.
How do I convert degrees Celsius back to degrees Rankine?
Use the reverse formula: °R = (°C + 273.15) × 9/5. For example 1 °C = 493.47 °R.
At what temperature are Celsius and Fahrenheit equal?
−40 °C is exactly −40 °F. It is the only temperature where both scales show the same number.
Is this converter free and accurate?
Yes. It is free, uses exact internationally defined conversion factors, and runs in your browser — nothing you type is sent anywhere.
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