Rankine to Kelvin Converter
How to convert Rankine to kelvin
K = °R ÷ 1.8
To convert Rankine to kelvin, divide the value in Rankine by 1.8.
1 °R = 0.555555556 K
Examples
- Water freezes: 491.67 °R ÷ 1.8 = 273.15 K
- 500 °R ÷ 1.8 = 277.777778 K
Good to know
Both scales start at absolute zero, so this conversion is a plain multiplication with no offset: °R = K × 1.8.
The Rankine scale starts at absolute zero, so there are no negative Rankine temperatures.
The kelvin scale starts at absolute zero, so there are no negative kelvin temperatures. Values are written without a degree sign: 300 K, not 300 °K.
Rankine to kelvin conversion table
| Rankine (°R) | Kelvin (K) |
|---|---|
| 0 °R | 0 K |
| 100 °R | 55.5555556 K |
| 200 °R | 111.111111 K |
| 300 °R | 166.666667 K |
| 400 °R | 222.222222 K |
| 459.67 °R | 255.372222 K |
| 491.67 °R | 273.15 K |
| 500 °R | 277.777778 K |
| 527.67 °R | 293.15 K |
| 550 °R | 305.555556 K |
| 600 °R | 333.333333 K |
| 671.67 °R | 373.15 K |
| 700 °R | 388.888889 K |
| 800 °R | 444.444444 K |
| 1,000 °R | 555.555556 K |
| 1,500 °R | 833.333333 K |
Unit definitions
- Rankine (°R)
- The Rankine scale starts at absolute zero and uses degrees the same size as the degree Fahrenheit, so a temperature in degrees Rankine is the Fahrenheit temperature plus 459.67. It is used in some US engineering calculations.
- Kelvin (K)
- The kelvin is the SI base unit of temperature, defined by fixing the value of the Boltzmann constant. Its scale starts at absolute zero and its unit is the same size as the degree Celsius; it is used throughout science and engineering.