°R to °C Converter - Rankine to Celsius
Rankine (°R) to Celsius (°C)
Direct answer
1 °R = -272.594444444 °C
°C = °R × 5/9 - 273.15
Converter
Conversion formula
°C = °R × 5/9 - 273.15
°R = (°C + 273.15) × 9/5
Example: 10 °R = -267.594444444 °C.
Note: this conversion depends on a specific unit definition or physical assumption. Check the context before using it in reports.
Common conversion table
| °R | °C |
|---|---|
| 1 °R | -272.594444444 °C |
| 2 °R | -272.038888889 °C |
| 5 °R | -270.372222222 °C |
| 10 °R | -267.594444444 °C |
| 20 °R | -262.038888889 °C |
| 50 °R | -245.372222222 °C |
| 100 °R | -217.594444444 °C |
| 1,000 °R | 282.405555556 °C |
Temperature conversion derivation
Convert °R to Kelvin first, then convert from Kelvin to °C. Temperature scales use both scaling and offset, so a single multiplicative factor is not enough.
- 1
°R to Kelvin
- 2
Kelvin to °C
- 3
Combined formula
AI explanation for this conversion
This pre-generated explanation is schema-checked. Numeric results still come from the page formula and calculator.
Rankine to Celsius Conversion
Converting from Rankine (°R) to Celsius (°C) requires a combined multiplicative factor and an offset. This is because the Rankine scale is an absolute scale based on the Fahrenheit degree size, while the Celsius scale is a relative scale with its zero point at the freezing point of water.
Definition
The conversion formula is °C = °R × 5/9 - 273.15. The factor 5/9 scales the Fahrenheit-sized degree to the Celsius-sized degree, and the subtraction of 273.15 adjusts for the difference in zero points between the absolute Rankine scale and the Celsius scale.
Principle
Temperature scale conversions between absolute and relative scales involve both a multiplicative scaling factor (to account for different degree sizes) and an additive offset (to account for different zero points). The Rankine and Kelvin scales share the same degree size as Celsius, but the offset between Rankine and Celsius is derived from the offset between their definitions.
Assumptions
- The conversion assumes the standard definition of the Rankine scale as absolute with Fahrenheit-sized degrees.
- The conversion assumes the standard definition of the Celsius scale relative to the Kelvin scale, with the offset of 273.15.
Cautions
- This conversion depends on a specific unit definition or physical assumption. Check the context before using it in reports.
- Temperature scale conversions use offsets, not only multiplicative factors.
FAQ
How many °C are in 1 °R?
1 °R = -272.594444444 °C.
How many °C are in 10 °R?
10 °R = -267.594444444 °C.
How many °C are in 100 °R?
100 °R = -217.594444444 °C.
What is the formula to convert °R to °C?
Use °C = °R × 5/9 - 273.15.
How many °R are in 1 °C?
1 °C = 493.47 °R.
What should I check when converting °R to °C?
Note: this conversion depends on a specific unit definition or physical assumption. Check the context before using it in reports.