Rankine to Celsius Converter
Convert Rankine (°R) to Celsius (°C) instantly. Formula: °C = (°R - 491.67) × 5/9.
Temperature Converter
5 units available
1 °R = -272.594444 °C
Formula:
°C = (°R - 491.67) × 5/9With your value: 1 °R = -272.59444444 °C
Other Rankine to Celsius conversions
Rankine to Celsius Conversion Table
| Rankine (°R) | Celsius (°C) |
|---|---|
| 0.5 | -272.872222 |
| 1 | -272.594444 |
| 2 | -272.038889 |
| 5 | -270.372222 |
| 10 | -267.594444 |
| 15 | -264.816667 |
| 20 | -262.038889 |
| 25 | -259.261111 |
| 50 | -245.372222 |
| 100 | -217.594444 |
| 250 | -134.261111 |
| 500 | 4.627778 |
| 1000 | 282.405556 |
Celsius to Rankine Conversion Table
| Celsius (°C) | Rankine (°R) |
|---|---|
| 0.5 | 492.57 |
| 1 | 493.47 |
| 2 | 495.27 |
| 5 | 500.67 |
| 10 | 509.67 |
| 15 | 518.67 |
| 20 | 527.67 |
| 25 | 536.67 |
| 50 | 581.67 |
| 100 | 671.67 |
| 250 | 941.67 |
| 500 | 1,391.67 |
| 1000 | 2,291.67 |
Where these values come from
Every factor on this page is traced to the document that defines it. See the full provenance dataset or our methodology.
Rankine (°R)
Temperature
Traceable to the kelvin, defined by fixing the Boltzmann constant at 1.380 649 × 10⁻²³ J/K. Celsius and Fahrenheit are exact affine transforms of the kelvin scale.
Source: BIPM, The International System of Units (SI), 9th edition, 2019 (updated 2024)
Bureau International des Poids et Mesures · Reviewed 2026-07-01
Celsius (°C)
Temperature
t/°C = T/K − 273.15. The degree Celsius has exactly the same magnitude as the kelvin.
Source: BIPM, The International System of Units (SI), 9th edition, 2019 (updated 2024)
Bureau International des Poids et Mesures · Reviewed 2026-07-01
How to Convert Rankine to Celsius
This conversion uses an offset formula, so it cannot be described by a single multiplication factor.
Formula: °C = (°R - 491.67) × 5/9
Reverse: °R = (°C + 273.15) × 9/5
Step-by-Step Example
- Start with your value in Rankine. For example: 5 °R
- Apply °C = (°R - 491.67) × 5/9
- The result is: -270.372222 °C
About Rankine
The Rankine scale is an absolute temperature scale using Fahrenheit-sized degrees: 0 °R is absolute zero and water freezes at 491.67 °R.
Common uses: US thermodynamics, combustion engineering.
About Celsius
The Celsius scale sets 0°C as the freezing point and 100°C as the boiling point of water at standard pressure. It is used by most countries worldwide.
Fun Fact: Anders Celsius originally proposed a scale where 100° was freezing and 0° was boiling—it was later reversed!
Common uses: weather, cooking, science.
Frequently Asked Questions
How many Celsius are in 1 Rankine?
There are exactly -272.5944444444 Celsius in 1 Rankine.
What is the formula to convert Rankine to Celsius?
The formula to convert Rankine to Celsius is: °C = (°R - 491.67) × 5/9. For example, to convert 10 Rankine to Celsius, you would apply the formula to 10.
What is a Rankine?
The Rankine scale is an absolute temperature scale using Fahrenheit-sized degrees: 0 °R is absolute zero and water freezes at 491.67 °R.
What is a Celsius?
The Celsius scale sets 0°C as the freezing point and 100°C as the boiling point of water at standard pressure. It is used by most countries worldwide.
What are the common uses of Rankine?
The Rankine is commonly used in US thermodynamics, combustion engineering.
Related Temperature Conversions
Cite this page
UnitConvertLab. (2026). Rankine to Celsius converter. UnitConvertLab. Retrieved from https://unitconvertlab.com/convert/rankine-to-celsius