Quick Answer:
°R = (°C + 273.15) × 9/5. To convert Celsius to Rankine, add 273.15 and multiply by 9/5.
Celsius and Rankine are used in engineering thermodynamics when absolute temperature is required in imperial units.
Detailed Overview: Celsius to Rankine
The Celsius scale sets 0°C at water’s freezing point. The Rankine scale is an absolute temperature scale based on Fahrenheit degrees. Formula: °R = (°C + 273.15) × 9/5. Reverse: °C = (°R × 5/9) – 273.15. Used in US engineering thermodynamics and power plants. 100°C equals 671.67°R.
Conversion Reference Table
0°C = 491.67°R, 25°C = 536.67°R, 37°C = 558.27°R, 100°C = 671.67°R, 500°C = 1391.67°R, 1000°C = 2291.67°R
Practical Calculation Example
Convert 50°C: °R = (50 + 273.15) × 9/5 = 581.67°R. Reverse: 900°R = (900 × 5/9) – 273.15 = 226.85°C
Key Takeaways
°R = (°C + 273.15) × 9/5. Add 273.15 to Celsius then multiply by 9/5 for Rankine.
THE AUTORANK Editorial Note: Rankine is used almost exclusively in US engineering, so convert to Kelvin for international thermodynamic calculations.
Frequently Asked Questions
Q: How do I convert Celsius to Rankine quickly?
A: Convert Celsius to Kelvin first, then multiply by 9/5. Example: 50°C = 323.15 K, then 323.15 × 1.8 = 581.67°R.
A: Convert Celsius to Kelvin first, then multiply by 9/5. Example: 50°C = 323.15 K, then 323.15 × 1.8 = 581.67°R.
Q: Is 0°C equal to 491.67°R?
A: Yes, 0°C equals exactly 491.67°R, water’s freezing point on the Rankine scale.
A: Yes, 0°C equals exactly 491.67°R, water’s freezing point on the Rankine scale.
The Celsius to Rankine factor of 9/5 plus 273.15 is essential for engineering thermodynamics.
Related Converters: Rankine to Kelvin | Celsius to Kelvin