Convert Kelvin to Rankine
Use this free converter to change kelvin (K) into rankine (°R). Kelvin and rankine both measure temperature. As a quick reference, 1 K equals 1.8 °R, and 1 °R equals 0.55555556 K.
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Rankine (°R)
1.8
1 K = 1.8 °R
Temperature conversion table
| Kelvin | Rankine |
|---|---|
| 0.01 | 0.018 |
| 0.1 | 0.18 |
| 0.5 | 0.9 |
| 1 | 1.8 |
| 2 | 3.6 |
| 3 | 5.4 |
| 5 | 9 |
| 10 | 18 |
| 20 | 36 |
| 25 | 45 |
| 50 | 90 |
| 100 | 180 |
| 1,000 | 1800 |
How to convert Kelvin to Rankine
Apply the Kelvin-to-Rankine temperature formula.
- Enter the number of kelvin you want to convert.
- The converter instantly shows the equivalent value in rankine.
- For example, 25 K = 45 °R using the formula above.
- Use the swap button to reverse the conversion (rankine to kelvin).
About these units
Kelvin (K)
- Definition
- The kelvin (K) is the SI base unit of temperature, starting at absolute zero with the same degree size as Celsius.
- History
- Proposed by William Thomson (Lord Kelvin) in 1848 and redefined in 2019 by fixing the Boltzmann constant.
- Current use
- Kelvin is used throughout science and engineering, especially in physics, chemistry, and astronomy.
Rankine (°R)
- Definition
- The degree Rankine (°R) is an absolute temperature scale that uses Fahrenheit-sized degrees starting at absolute zero.
- History
- Proposed by Scottish engineer William Rankine in 1859 as the absolute counterpart to Fahrenheit.
- Current use
- Rankine appears in some US engineering and thermodynamics work, particularly in aerospace.
Frequently asked questions
How many rankine are in a kelvin?
There are 1.8 °R in 1 K. To convert, apply the temperature formula shown above.
How do I convert kelvin to rankine?
Apply the Kelvin-to-Rankine temperature formula. For example, 10 K = 18 °R.
Is this kelvin-to-rankine converter free?
Yes. This converter is completely free, runs entirely in your browser, and requires no sign-up. Your inputs never leave your device.
Convert Kelvin to other temperature units
| Unit | 1 Kelvin equals |
|---|---|
| Celsius (°C) | -272.15 °C |
| Fahrenheit (°F) | -457.87 °F |
| Rankine (°R) | 1.8 °R |