Temperature
Convert degree Celsius (°C) to degree Rankine (°R). Temperature scales are affine, not just scaled — converting requires an offset as well as a factor, which is why °C and °F don't share a zero.
1 °C = 493.47 °R
To convert degree Celsius to degree Rankine, apply °R = °C × 1.8 + 491.67.
| °C | °R |
|---|---|
| 1 | 493.47 |
| 2 | 495.27 |
| 5 | 500.67 |
| 10 | 509.67 |
| 25 | 536.67 |
| 50 | 581.67 |
| 100 | 671.67 |
| 250 | 941.67 |
| 500 | 1391.67 |
| 1000 | 2291.67 |
Process temperatures are read in °C or °F; thermodynamic calculations use absolute K or °R.
A temperature difference is not the same as an absolute temperature: a 10 °C rise equals an 18 °F rise, but 10 °C does not equal 50 °F.
Worked example. A temperature of 150 °C is 761.67 °R.
Use °R = °C × 1.8 + 491.67. Temperature scales are affine, so the conversion needs both a multiplier and an offset — unlike a simple unit factor.
1 °C equals 493.47 °R. Note that a temperature difference converts differently from an absolute temperature.
Process temperatures are read in °C or °F; thermodynamic calculations use absolute K or °R.