Celsius (°C) to Rankine (°R) Conversion
Celsius
The Celsius scale sets 0 °C at the freezing point of water and 100 °C at its boiling point at standard atmospheric pressure. Proposed by Anders Celsius in 1742, it became the international standard for scientific and everyday temperature measurement in all countries that have adopted SI. The Celsius degree is identical in magnitude to the Kelvin, so temperature differences in Celsius and Kelvin are numerically equivalent, though their zeros differ by exactly 273.15.
Rankine
The Rankine scale is an absolute temperature scale using the same degree size as Fahrenheit but with zero at absolute zero (−459.67 °F). It is to Fahrenheit what Kelvin is to Celsius. Used primarily in US aerospace engineering and thermodynamic cycle analysis where Fahrenheit-sized degrees are conventional but absolute temperature values are required. Water freezes at 491.67 °R and boils at 671.67 °R.
| Celsius (°C) | Rankine (°R) |
|---|---|
| -10 °C | 473.67 °R |
| 0 °C | 491.67 °R |
| 10 °C | 509.67 °R |
| 20 °C | 527.67 °R |
| 25 °C | 536.67 °R |
| 30 °C | 545.67 °R |
| 37 °C | 558.27 °R |
| 40 °C | 563.67 °R |
| 50 °C | 581.67 °R |
| 60 °C | 599.67 °R |
| 100 °C | 671.67 °R |
Frequently Asked Questions (FAQ)
What is the formula to convert Celsius to Rankine?
The exact formula is °R = (°C + 273.15) × 9/5. For example: 0°C = 273.15 × 9/5 = 491.67 °R and 100°C = 373.15 × 9/5 = 671.67 °R. Rankine is an absolute scale using Fahrenheit-sized degrees.
What is absolute zero in Rankine and Celsius?
Absolute zero is 0 °R = −273.15°C. Both Kelvin and Rankine start at absolute zero — the difference is that Rankine uses Fahrenheit-sized degrees (9/5 the size of a Kelvin), while Kelvin uses Celsius-sized degrees.
Convert Celsius (°C) to other units of Temperature
| ‣ Celsius (°C) to Celsius (°C) |
| ‣ Celsius (°C) to Fahrenheit (°F) |
| ‣ Celsius (°C) to Kelvin (K) |
| ‣ Celsius (°C) to Rankine (°R) |
| ‣ Celsius (°C) to Celsius (°C) |
| ‣ Fahrenheit (°F) to Celsius (°C) |
| ‣ Kelvin (K) to Celsius (°C) |
| ‣ Rankine (°R) to Celsius (°C) |