Kelvin to Rankine converter
Type a Kelvin value and read Rankine instantly, with the other two scales alongside. The formula is °R = K × 9/5.
- 0 K = 0 °R
- 273.15 K = 491.67 °R
- 300 K = 540 °R
- 373.15 K = 671.67 °R
How to convert Kelvin to Rankine
°R = K × 9/5
Rankine is an absolute scale with Fahrenheit-sized degrees. It shows up in US thermodynamics, HVAC and aerospace work, where engineers want an absolute scale but think in Fahrenheit steps. Step through a worked example:
°R = K × 9/5
- …
K to °R table
| Kelvin (K) | Rankine (°R) |
|---|---|
| 0 K | 0 °R |
| 50 K | 90 °R |
| 77 K | 138.6 °R |
| 100 K | 180 °R |
| 173.15 K | 311.67 °R |
| 200 K | 360 °R |
| 233.15 K | 419.67 °R |
| 250 K | 450 °R |
| 255.37 K | 459.67 °R |
| 263.15 K | 473.67 °R |
| 273.15 K | 491.67 °R |
| 283.15 K | 509.67 °R |
| 293.15 K | 527.67 °R |
| 298.15 K | 536.67 °R |
| 300 K | 540 °R |
| 310.15 K | 558.27 °R |
| 323.15 K | 581.67 °R |
| 350 K | 630 °R |
| 373.15 K | 671.67 °R |
| 400 K | 720 °R |
| 500 K | 900 °R |
| 600 K | 1080 °R |
| 1000 K | 1800 °R |
| 5772 K | 10389.6 °R |
Need more rows? The full temperature conversion chart goes from −50 to 300 °C.
Questions
How do you convert Kelvin to Rankine?
Use °R = K × 9/5. For example, 293.15 K is 527.67 °R.
What is 0 K in Rankine?
0 K equals 0 °R.
What is 100 K in Rankine?
100 K equals 180 °R.
Why use Rankine?
Rankine is an absolute scale with Fahrenheit-sized degrees. It shows up in US thermodynamics, HVAC and aerospace work, where engineers want an absolute scale but think in Fahrenheit steps.
What is the temperature unit °R?
°R is the degree Rankine, an absolute temperature unit the same size as a Fahrenheit degree. 0 °R is absolute zero (−459.67 °F), water freezes at 491.67 °R and boils at 671.67 °R at sea level.
Are Rankine and Kelvin the same?
Both start at absolute zero, but a kelvin is 1.8 times bigger than a degree Rankine. So °R = K × 9/5: 300 K is 540 °R.
Why is Kelvin written without a degree sign?
Since 1967 the SI unit has been "the kelvin" (K), a unit like the metre, not "degrees Kelvin". A kelvin is the same size as a Celsius degree.