Degrees Rankine (°R)

The Rankine scale is an absolute temperature scale that uses Fahrenheit-sized degrees.

Convert degrees Rankine to any temperature unit

560 degrees Rankine = 37.96111111 degrees Celsius

Quick facts

Unit
Degree Rankine (plural: degrees Rankine)
Symbol
°R
Measures
Temperature
System
Common scales
Equals
0.555555555556 kelvins
Definition
°R = K × 9/5; absolute zero is 0 °R and water freezes at 491.67 °R.
Also written
rankine, °Ra

1 degree Rankine in other units

Degrees Celsius-272.5944444 °C
Degrees Fahrenheit-458.67 °F
Kelvins0.5555555556 K
Gas marks-6.5867 GM
Degrees Réaumur-218.0755556 °Ré

What is a degree Rankine?

The Rankine scale is an absolute temperature scale that uses Fahrenheit-sized degrees. It starts at absolute zero, so 0 °R = 0 K = −459.67 °F, and water freezes at 491.67 °R. It is used by some engineers in the United States for thermodynamics, where an absolute scale is needed but Fahrenheit-based units are the norm.

What degrees Rankine are used for

  • US engineering thermodynamics (steam tables, gas turbines)
  • Combustion and aerospace calculations in US customary units

History of the degree Rankine

The scale is named after the Scottish engineer and physicist William John Macquorn Rankine, who proposed it in 1859.

Top degree Rankine conversions

Common amounts of degrees Rankine

Convert degrees Rankine to all 16 other units

Common scales

Historical scales

Scientific

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Frequently asked questions

What is a degree Rankine?

The Rankine scale is an absolute temperature scale that uses Fahrenheit-sized degrees.

How is the degree Rankine defined?

°R = K × 9/5; absolute zero is 0 °R and water freezes at 491.67 °R.

How many degrees Celsius are in a degree Rankine?

One degree Rankine equals -272.5944444 degrees Celsius.

How many degrees Fahrenheit are in a degree Rankine?

One degree Rankine equals -458.67 degrees Fahrenheit.

How many kelvins are in a degree Rankine?

One degree Rankine equals 0.5555555556 kelvins.