Rankine to Kelvin | °R to K Converter

Rankine to Kelvin Converter

Convert between Rankine and Kelvin. Useful for thermodynamics, engineering, and absolute temperature calculations.

Last updated: March 2026 | By Patchworkr Team

Result will appear here...

What is Rankine to Kelvin conversion?

Rankine to Kelvin conversion is used when translating between two absolute temperature scales.

Both Rankine and Kelvin start at absolute zero, but Rankine uses Fahrenheit-sized degrees while Kelvin uses Celsius-sized degrees.

Because the interval sizes differ, conversion requires multiplying by 5/9 or 9/5.

How to convert Rankine to Kelvin

Main formula (°R → K)

K = °R × 5/9

Multiply the Rankine value by 5/9 to get Kelvin.

Reverse formula (K → °R)

°R = K × 9/5

Multiply the Kelvin value by 9/5 to get Rankine.

How to convert 540°R to Kelvin

Convert 540°R to Kelvin

540 × 5/9 = 300 K
300 K

Common Rankine to Kelvin Conversions

RankineKelvin
0 °R0 K
419.67 °R233.15 K
491.67 °R273.15 K
509.67 °R283.15 K
527.67 °R293.15 K
536.67 °R298.15 K
558.27 °R310.15 K
581.67 °R323.15 K
671.67 °R373.15 K
1391.67 °R773.15 K

Frequently Asked Questions

How do I convert Rankine to Kelvin quickly?

Multiply the Rankine value by 5/9.

How do I convert Kelvin to Rankine?

Multiply the Kelvin value by 9/5.

What is 0°R in Kelvin?

0 K.

Do Rankine and Kelvin both start at absolute zero?

Yes, both are absolute temperature scales.

Why are the numbers different if both are absolute scales?

Because Rankine uses Fahrenheit-sized degrees and Kelvin uses Celsius-sized degrees.

Is Rankine bigger or smaller than Kelvin?

Rankine degrees are smaller, so Rankine values are numerically larger for the same temperature.

Where is Rankine used?

Mostly in engineering and thermodynamics, especially in Fahrenheit-based systems.

Can I use this for scientific calculations?

Yes, it works for absolute temperature conversions.

Related Tools