Degrees Rankine to Kelvin
Type a value in Degrees Rankine and get the result in Kelvin, calculated exactly.
20 Degrees Rankine ≈ 11.11111111 Kelvin
Exact factorRounded for display to about 10 significant digits.
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Range 0 – 50 °R = 0 – 27.7778 K
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Formula
K = °R ÷ 1.8
To convert Degrees Rankine to Kelvin, divide the value by 1.8.
Worked examples
- 0 °R ÷ 1.8 = 0 K
- 20 °R ÷ 1.8 ≈ 11.11111111 K
- 100 °R ÷ 1.8 ≈ 55.55555556 K
This factor is exact by definition.
Conversion table
| Degrees Rankine (°R) | Kelvin (K) |
|---|---|
| −40 | — |
| −30 | — |
| −20 | — |
| −10 | — |
| 0 | 0 |
| 5 | ≈ 2.777778 |
| 10 | ≈ 5.555556 |
| 15 | ≈ 8.333333 |
| 20 | ≈ 11.11111 |
| 25 | ≈ 13.88889 |
| 30 | ≈ 16.66667 |
| 35 | ≈ 19.44444 |
| 37 | ≈ 20.55556 |
| 40 | ≈ 22.22222 |
| 50 | ≈ 27.77778 |
| 60 | ≈ 33.33333 |
| 70 | ≈ 38.88889 |
| 80 | ≈ 44.44444 |
| 90 | 50 |
| 100 | ≈ 55.55556 |
| 150 | ≈ 83.33333 |
| 200 | ≈ 111.1111 |
Values marked ≈ are rounded; the rest are exact.
Reverse table: Kelvin to Degrees Rankine
| Kelvin (K) | Degrees Rankine (°R) |
|---|---|
| −40 | — |
| −30 | — |
| −20 | — |
| −10 | — |
| 0 | 0 |
| 5 | 9 |
| 10 | 18 |
| 15 | 27 |
| 20 | 36 |
| 25 | 45 |
| 30 | 54 |
| 35 | 63 |
| 37 | 66.6 |
| 40 | 72 |
| 50 | 90 |
| 60 | 108 |
| 70 | 126 |
| 80 | 144 |
| 90 | 162 |
| 100 | 180 |
| 150 | 270 |
| 200 | 360 |
Unit definitions
- Degrees Rankine °R
- An absolute scale with Fahrenheit-sized degrees: exactly 5/9 of a kelvin, starting at absolute zero.
- Kelvin K
- The SI base unit of temperature, starting at absolute zero.
Questions people ask
Degrees Rankine to Kelvin: what is the conversion factor?
One °R is ≈ 0.5555555556 K.
How do I convert Degrees Rankine to Kelvin?
Use the formula above. For example, 20 °R = ≈ 11.11111111 K.
Is the conversion exact?
Yes. Both units have exact definitions, so the factor is exact; a result is only rounded when its decimals never end.
Factors checked 19 October 2026.