Rankine to Celsius
Quickly convert Rankine to Celsius with our accurate and simple-to-use tool. Perfect for students, professionals, and hobbyists alike—fast and hassle-free!
Rankine to Celsius conversion: Subtract 491.67 from the value in Rankine and multiply by 5/9.
Rankine conversions
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Rankine
Definition
Rankine (R) is an absolute temperature scale used primarily in engineering and thermodynamics. It is based on the Fahrenheit scale, with absolute zero set as the starting point. Unlike Fahrenheit, Rankine measurements do not use the degree symbol (°). The Rankine scale increments are equal to those of Fahrenheit, making it directly proportional to the Fahrenheit temperature scale.
History/Origin
The Rankine scale was proposed in 1859 by William John Macquorn Rankine, a Scottish engineer and physicist. Rankine introduced this scale to provide a way to measure absolute temperature using the Fahrenheit increments, aligning with the needs of engineering and thermodynamic studies at the time.
Current Use
The Rankine scale is mainly used in engineering systems and thermodynamic studies, particularly in the United States. It is commonly applied in calculations involving heat, energy, and power systems, especially in fields like aerospace and mechanical engineering.
Celsius
Definition
Celsius (°C) is a temperature scale used worldwide in everyday and scientific contexts. It is part of the metric system and is based on the freezing and boiling points of water. On the Celsius scale, water freezes at 0°C and boils at 100°C under standard atmospheric pressure. The unit is denoted by the symbol °C.
History/Origin
The Celsius scale was created in 1742 by Swedish astronomer Anders Celsius. Initially, Celsius’ scale had the boiling point of water at 0°C and the freezing point at 100°C, but this was later reversed to the format we use today. Its integration with the metric system has made it the standard temperature scale in most countries.
Current Use
Celsius is the primary temperature scale used in weather forecasts, scientific research, cooking, and industrial applications. Its logical 100-point division between the freezing and boiling points of water makes it user-friendly and widely accepted in both professional and everyday contexts.
Conversion Details
Conversion Formula and Factor
To convert Rankine (R) to Celsius (°C), use the following formula:
[ \text{°C} = (\text{R} - 491.67) \times \frac{5}{9} ]
Quick Reference Conversion Table
Step-by-Step Conversion Instructions
Example: Convert 559.67 R to Celsius
Start with the formula: [ \text{°C} = (\text{R} - 491.67) \times \frac{5}{9} ]
Subtract 491.67 from the Rankine value: [ 559.67 - 491.67 = 68 ]
Multiply the result by 5/9: [ 68 \times \frac{5}{9} = 37.78 ]
Result: 559.67 R equals 37.78°C.
Practical Examples
Example 1: Freezing Point of Water
Rankine: 491.67 R
Conversion: [ \text{°C} = (491.67 - 491.67) \times \frac{5}{9} = 0°C ]
Result: 491.67 R equals 0°C, the freezing point of water.
Example 2: Boiling Point of Water
Rankine: 671.67 R
Conversion: [ \text{°C} = (671.67 - 491.67) \times \frac{5}{9} ] [ \text{°C} = 180 \times \frac{5}{9} = 100°C ]
Result: 671.67 R equals 100°C, the boiling point of water.
Common Conversions
Latest Conversions
Frequently Asked Questions
To convert Celsius to Rankine, use the formula R = (C + 273.15) × 9/5. For example, 25°C converts to 536.67 R.
