Celsius to Rankine
( °C → °R )
Instantly convert Celsius to Rankine. Enter any value below and get an accurate result with the full formula and reference table.
How to Convert Celsius to Rankine
To convert Celsius to Rankine, first add 273.15 to the Celsius temperature to convert to Kelvin, then multiply by 9/5 (or 1.8). This is because the Rankine scale is an absolute temperature scale with the same degree size as Fahrenheit.
Step-by-Step Example
Let’s convert 25°C to Rankine:
1. Add 273.15: 25 + 273.15 = 298.15
2. Multiply by 9/5: 298.15 × 9/5 = 536.67
3. So 25°C equals 536.67°R.
Another common example: 100°C (boiling point of water) → (100 + 273.15) × 9/5 = 373.15 × 1.8 = 671.67°R.
Note on Absolute Zero
The Rankine scale, like Kelvin, starts at absolute zero: 0°R = -273.15°C. It is mainly used in some engineering fields, particularly in the United States.
When You’d Use Each Unit
Celsius is used worldwide for everyday temperatures. Rankine is used in thermodynamics and some engineering applications, especially when working with Fahrenheit-based systems. Converting between them is useful in scientific and engineering contexts.
Common Celsius values converted to Rankine — typical values highlighted.
| Celsius (°C) | Rankine (°R) | Approximate |
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