Degree Rankine to Kelvin Conversion

Convert between Degree Rankine and Kelvin quickly and accurately.

From Degree Rankine

°R

To Kelvin

How to Convert Degree Rankine to Kelvin

Conversion Formula

1 °R = 0.556 K

1 K = 1.8 °R

Example

Convert 15 °R to K:

15 °R = 15 × 0.556 K = 8.333 K

Unit Information

Learn about the temperature interval units you're converting between

Degree Rankine

°R

Definition

The degree Rankine (°R) is an absolute temperature scale unit that is also used for temperature intervals. It is equal to 5/9 of a kelvin and represents the same temperature interval as degree Fahrenheit, but on an absolute temperature scale rather than a relative one.

History/Origin

Named after William John Macquorn Rankine, the degree Rankine was developed as an absolute temperature scale based on the Fahrenheit scale. For temperature intervals, it provides the same resolution as degree Fahrenheit but is used in absolute temperature measurements.

Current Use

Used in engineering applications, particularly in thermodynamics and heat transfer calculations where absolute temperature measurements are required. It is commonly used in power generation, refrigeration, and aerospace engineering for temperature interval measurements.

Multiplier

0.556

Offset

Kelvin

Definition

The kelvin (K) is the SI base unit of thermodynamic temperature and is also used for temperature intervals. When measuring temperature differences, one kelvin equals one degree Celsius, making it the standard unit for temperature interval measurements in scientific and engineering applications.

History/Origin

Named after Lord Kelvin (William Thomson), the kelvin was established as the SI base unit for temperature in 1967. It was designed to provide an absolute temperature scale where zero represents absolute zero, and temperature intervals are measured in the same units as the temperature scale itself.

Current Use

Widely used in scientific research, engineering, and industrial applications for measuring temperature differences and intervals. It is the standard unit for temperature interval measurements in thermodynamics, heat transfer analysis, and temperature control systems.

Multiplier

Offset