Unit Converters

Precision suite9 categories | metric & imperial

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Temp Conversion

From

Amount to Convert

Result

1.8°R

1 Kelvin = 1.8 Rankine

infoAbout Temp Tool

Temperature scale conversions between Celsius, Fahrenheit, Kelvin, and Rankine with exact mathematical formulas.

Quick References

1 Celsius to Fahrenheit33.8
1 Fahrenheit to Kelvin255.92777778
1 Celsius to Kelvin274.15

table_chartCommon Conversions

Celsius-272.15 °C

Fahrenheit-457.87 °F

Rankine1.8 °R

Kelvin to Rankine Conversion Table

Kelvin (K)	Rankine (°R)
1 K	1.8 °R
2 K	3.6 °R
5 K	9 °R
10 K	18 °R
25 K	45 °R
50 K	90 °R
100 K	180 °R
250 K	450 °R
500 K	900 °R
1000 K	1800 °R

How to Convert Kelvin to Rankine

Formula

°R = K × 9/5

Worked Example

Example: 273.15 K = 273.15 × 9/5 = 491.67 °R

Multiply Kelvin by 9/5 to get Rankine.

About These Units

Kelvin

Kelvin is the SI base unit of temperature. It uses the same increment size as Celsius but starts at absolute zero (-273.15°C), the theoretically coldest possible temperature where all molecular motion ceases. It is used extensively in science and engineering.

History

The Kelvin scale is named after Lord Kelvin (William Thomson), who proposed it in 1848. Unlike Celsius and Fahrenheit, Kelvin does not use the degree symbol — temperatures are expressed simply as 'kelvins.' In 2019, the kelvin was redefined in terms of the Boltzmann constant.

°R

Rankine

Rankine is an absolute temperature scale using Fahrenheit-sized degrees but starting at absolute zero. 0°R equals absolute zero (-459.67°F). It is primarily used in certain engineering fields in the United States, particularly in thermodynamics.

History

The Rankine scale was proposed by Scottish engineer William John Macquorn Rankine in 1859. It serves the same purpose as the Kelvin scale but uses Fahrenheit increments. The freezing point of water is 491.67°R and the boiling point is 671.67°R.

Frequently Asked Questions

Related Temp Conversions

arrow_forwardKelvin to Celsius arrow_forwardKelvin to Fahrenheit arrow_forwardCelsius to Rankine arrow_forwardFahrenheit to Rankine

Why use NexaConvert for Units?

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Scientific Accuracy

Calculated using the latest NIST standards for physical constants and unit ratios.

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Instant Execution

No reload required. Get your results in real-time as you type or change units.

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Cross-Device

A responsive precision tool that fits in your pocket or dominates your desktop.

How these conversions work

Each category converts first through a base unit, then into the destination unit. That keeps the math consistent across metric and imperial systems and makes it easier to explain how results are generated.

When to double-check

Use these tools for planning, study, and everyday reference. For regulated, medical, engineering, or procurement work, confirm requirements against the official standard or specification you are working from.

Kelvin (K)

Rankine (°R)

1 K

1.8 °R

2 K

3.6 °R

5 K

9 °R

10 K

18 °R

25 K

45 °R

50 K

90 °R

100 K

180 °R

250 K

450 °R

500 K

900 °R

1000 K

1800 °R

About These Units

Kelvin

History

°R

Rankine

History

Why use NexaConvert for Units?

verified

Scientific Accuracy

Calculated using the latest NIST standards for physical constants and unit ratios.

bolt

Instant Execution

No reload required. Get your results in real-time as you type or change units.

devices

Cross-Device

A responsive precision tool that fits in your pocket or dominates your desktop.