Kelvin to Rankine Converter
Quick answer: Kelvin to Rankine: use °R = K × 9/5. For example, 37 K is 66.6 °R.
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Use the Kelvin to Rankine Converter
Kelvin to Rankine formula and what each symbol means
°R = K × 9/5
| Symbol | Meaning |
|---|---|
| K | Kelvin |
| °R | Degree Rankine |
Kelvin to Rankine examples
0 K
0 K = 0 °R.
37 K
37 K = 66.6 °R.
100 K
100 K = 180 °R.
Kelvin compared with Rankine
These two scales agree at exactly 0: 0 K = 0 °R. Use that fixed point as a quick sanity check on any result.
About Kelvin and Rankine
Kelvin (K): The SI base unit of thermodynamic temperature, where 0 K is absolute zero. Degree Rankine (°R): Rankine: an absolute scale with Fahrenheit-sized degrees, where 0 °R is absolute zero.
Where Kelvin to Rankine conversions are used
Weather forecasts, ovens and body temperature use different scales depending on the country. Science and engineering work in kelvin, because it starts at absolute zero.
How to calculate Kelvin to Rankine step by step
- Enter the value in K.
- Apply the formula °R = K × 9/5.
- The result is in °R. Use the reverse formula to go back.
Popular temperature conversions
How to read your Kelvin to Rankine result
Water freezes at 0 °C, 32 °F and 273.15 K, and boils at 100 °C, 212 °F and 373.15 K at standard pressure.
| KELVIN | RANKINE |
|---|---|
| -40 | -72 |
| -10 | -18 |
| 0 | 0 |
| 20 | 36 |
| 37 | 66.6 |
| 50 | 90 |
| 100 | 180 |
| 212 | 381.6 |
Rankine to Kelvin: quick table
| RANKINE | KELVIN |
|---|---|
| -40 | -22.22222 |
| -10 | -5.555556 |
| 0 | 0 |
| 15 | 8.333333 |
| 25 | 13.88889 |
| 37 | 20.55556 |
| 60 | 33.33333 |
| 90 | 50 |
Common mistakes when calculating Kelvin to Rankine
- Multiplying by 1.8 but forgetting to add 32 when converting Celsius to Fahrenheit.
- Using a single multiplier: this conversion is not a simple scale, so follow the full formula °R = K × 9/5.
Kelvin to Rankine FAQ
What is the formula to convert Kelvin to Rankine?
°R = K × 9/5.
What is the formula to convert Rankine to Kelvin?
K = °R × 5/9.
What is 0 K in °R?
0 K equals 0 °R.
What is a degree Rankine (°R)?
Rankine: an absolute scale with Fahrenheit-sized degrees, where 0 °R is absolute zero.
How can I estimate Kelvin to Rankine in my head?
These two scales agree at exactly 0: 0 K = 0 °R. Use that fixed point as a quick sanity check on any result.
What is 90 K in Rankine?
90 K = 162 °R, using °R = K × 9/5.
What is 40 K in Rankine?
40 K = 72 °R, using °R = K × 9/5.
What is 25 K in Rankine?
25 K = 45 °R, using °R = K × 9/5.
How many decimals should I keep when converting K to °R?
Match the precision of your original measurement. For example, 66.6 °R rounds to 66.6 °R at 3 significant figures; keep more digits only for engineering or scientific work.
More in Temperature converters
- Fahrenheit to Rankine Converter
- Fahrenheit to Kelvin Converter
- Celsius to Fahrenheit Converter
- Fahrenheit to Celsius Converter
- Celsius to Kelvin Converter
- Celsius to Rankine Converter
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Method, review and disclaimer
Edited by: Hemant Kumar and Anjita Rai, founders of ToolsVault (SEO and content professional, not a licensed adviser). Method: this tool runs in your browser using the formula shown on this page; the numbers you enter are not sent to our servers. Sources: NIST SP 811, Appendix B.8: conversion factors, BIPM: the kelvin