Convert Rankine (°R) (rankine) to Celsius (°C) (celsius)
Category: Temperature
1 rankine = -272.594444 celsius
High-precision rounding: 6 decimals
How to convert rankine (°r) to celsius (°c)
We convert by pivoting through the SI base unit for Temperature and applying exact factors where applicable.
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Quick conversion table
Handy values for Rankine (°R) → Celsius (°C). Click a value to open that exact result.
Conversion formula
Temperature conversions use exact affine formulas (ratio + offset).
Common mistakes
- Using only a ratio (×1.8 or ×0.555…) without adding/subtracting the offset (±32, +273.15).
- Rounding too early; convert first, then round to the desired precision.
Unit facts
- Rankine (°R): Rankine (°R) is an absolute scale using Fahrenheit-sized degrees; used in some engineering contexts.
- Celsius (°C): Celsius (°C) is an offset scale: 0 °C at water’s freezing point, 100 °C at boiling (1 atm).
About Temperature
Temperature scales combine ratios and offsets. Kelvin is absolute (no negative values), Celsius offsets Kelvin by 273.15, and Fahrenheit uses a different step and zero point. Because offsets exist, temperature conversions require both a factor and an addition/subtraction.
About Rankine (°R)
Rankine (°R)
Absolute scale using Fahrenheit-sized degrees. Useful in aerospace and thermodynamic calculations within imperial frameworks.
History: Introduced by William Rankine in the 19th century as an analogue of Kelvin for Fahrenheit users.
About Celsius (°C)
Celsius (°C)
Offset scale with 0 °C at water’s freezing point and 100 °C at boiling (at 1 atm). Converts to Kelvin by adding 273.15. Widely used in daily weather and science.
History: Named for Anders Celsius (1740s). Redefined through absolute thermodynamic scales as metrology advanced.
Related conversions from rankine
- rankine → fahrenheit Fahrenheit (°F)
- rankine → kelvin Kelvin (K)
Related conversions to celsius
- fahrenheit → celsius Fahrenheit (°F)
- kelvin → celsius Kelvin (K)