1 kelvin is equal to 1.8 rankine.
Table of Contents
The kelvin and rankine scales both measure absolute temperature, but kelvin uses increments based on Celsius degrees while rankine uses Fahrenheit degrees. Since 1 kelvin equals 1.8 degrees Fahrenheit, converting kelvin to rankine involves multiplying by 1.8.
Conversion Tool
Result in rankine:
Conversion Formula
To convert kelvin (K) to rankine (°R), multiply the kelvin value by 1.8. This works because the kelvin scale uses the size of Celsius degrees, while rankine uses the size of Fahrenheit degrees. Since 1 degree Celsius equals 1.8 degrees Fahrenheit, each kelvin unit corresponds to 1.8 rankine.
Formula:
Rankine = Kelvin × 1.8
Example calculation for 1 kelvin:
Rankine = 1 K × 1.8 = 1.8 °R
Conversion Example
- Example: Convert 5 kelvin to rankine
- Multiply 5 by 1.8.
- 5 × 1.8 = 9 rankine.
- Therefore, 5 kelvin equals 9 rankine.
- Example: Convert 10 kelvin to rankine
- Multiply 10 by 1.8.
- 10 × 1.8 = 18 rankine.
- So, 10 kelvin equals 18 rankine.
- Example: Convert 0.5 kelvin to rankine
- Multiply 0.5 by 1.8.
- 0.5 × 1.8 = 0.9 rankine.
- This means 0.5 kelvin equals 0.9 rankine.
- Example: Convert 20 kelvin to rankine
- Multiply 20 by 1.8.
- 20 × 1.8 = 36 rankine.
- Therefore, 20 kelvin equals 36 rankine.
Conversion Chart
The table below shows kelvin values from -24.0 to 26.0 and their corresponding rankine values. You can find the rankine temperature for any kelvin value in this range by looking it up. Since rankine equals kelvin times 1.8, each row multiplies the kelvin value by 1.8 to get rankine.
| Kelvin (K) | Rankine (°R) |
|---|---|
| -24.0 | -43.2 |
| -20.0 | -36.0 |
| -16.0 | -28.8 |
| -12.0 | -21.6 |
| -8.0 | -14.4 |
| -4.0 | -7.2 |
| 0.0 | 0.0 |
| 4.0 | 7.2 |
| 8.0 | 14.4 |
| 12.0 | 21.6 |
| 16.0 | 28.8 |
| 20.0 | 36.0 |
| 24.0 | 43.2 |
| 26.0 | 46.8 |
Related Conversion Questions
- How many rankine equal 1 kelvin?
- What is the formula to convert 1 kelvin to rankine?
- Is 1 kelvin more or less than 1 rankine?
- How to convert temperature from kelvin to rankine for value 1?
- Can I convert 1 kelvin directly to rankine without adding constants?
- What is the difference between kelvin and rankine when temperature is 1?
- Why is 1 kelvin equal to 1.8 rankine?
Conversion Definitions
Kelvin: Kelvin is a temperature scale based on absolute zero, where zero kelvin is the coldest possible temperature. It uses the same increment size as degree Celsius but starts at absolute zero, making it useful for scientific measurements where negative temperatures in Celsius are not practical.
Rankine: Rankine is an absolute temperature scale like kelvin but based on the Fahrenheit degree. Zero rankine is absolute zero, and the scale increments are equal in size to Fahrenheit degrees, making it mostly used in some engineering fields in the United States for thermodynamic temperature measurements.
Conversion FAQs
Why does the kelvin to rankine conversion not require adding or subtracting constants?
Kelvin and rankine are both absolute temperature scales starting at absolute zero, meaning they measure from the lowest possible temperature. The only difference is the size of their units: kelvin uses Celsius degrees, rankine uses Fahrenheit degrees. So converting only needs multiplication by the ratio of degree sizes (1.8) without adding offsets.
Can kelvin values be negative when converting to rankine?
No, kelvin cannot be negative because it begins at absolute zero, the lowest achievable temperature. Since rankine also starts at absolute zero, negative values don’t occur in either scale, so negative kelvin inputs are non-physical and should not be converted.
Is the kelvin to rankine formula affected by atmospheric pressure?
Does atmospheric pressure affect the conversion between kelvin and rankine?
No, the conversion between kelvin and rankine is purely mathematical based on unit sizes, independent of physical conditions like atmospheric pressure. Temperature conversions are scale-based and not influenced by environmental factors.
How precise is the kelvin to rankine conversion?
The conversion is exact mathematically because it’s a simple multiplication by 1.8. However, measurement precision depends on the instrument reading the temperature, not the conversion formula itself. The formula does not introduce errors but rounding can occur when displaying results.