125 kelvin equals 225 rankine.
The conversion from kelvin to rankine involves multiplying the kelvin temperature by 1.8. Since kelvin and rankine scales both start at absolute zero but use different unit sizes, this conversion scales the value accordingly to find the equivalent temperature in rankine.
Conversion Tool
Result in rankine:
Conversion Formula
The formula to convert kelvin (K) to rankine (°R) is:
°R = K × 1.8
This works because both kelvin and rankine scales start at absolute zero, but each kelvin unit equals 1.8 rankine units. The scale increment is different, so multiplying by 1.8 converts the temperature value directly. No offset is needed since both start from the same zero point.
Example calculation for 125 K:
- Multiply 125 by 1.8.
- 125 × 1.8 = 225.
- So, 125 kelvin is equal to 225 rankine.
Conversion Example
- 50 kelvin to rankine:
- Multiply 50 by 1.8.
- 50 × 1.8 = 90.
- Therefore, 50 K equals 90 °R.
- 200 kelvin to rankine:
- Multiply 200 by 1.8.
- 200 × 1.8 = 360.
- So, 200 K converts to 360 °R.
- 0 kelvin to rankine:
- Multiply 0 by 1.8.
- 0 × 1.8 = 0.
- Zero kelvin equals zero rankine, both absolute zero.
- 300 kelvin to rankine:
- Multiply 300 by 1.8.
- 300 × 1.8 = 540.
- So, 300 K equals 540 °R.
Conversion Chart
| Kelvin (K) | Rankine (°R) |
|---|---|
| 100.0 | 180.0 |
| 105.0 | 189.0 |
| 110.0 | 198.0 |
| 115.0 | 207.0 |
| 120.0 | 216.0 |
| 125.0 | 225.0 |
| 130.0 | 234.0 |
| 135.0 | 243.0 |
| 140.0 | 252.0 |
| 145.0 | 261.0 |
| 150.0 | 270.0 |
This chart shows kelvin values from 100 to 150 with their corresponding rankine equivalents. To use it, find the kelvin temperature you want to convert then see the rankine value next to it. The values increase by 5 kelvin steps, and you can interpolate for in-between values if needed.
Related Conversion Questions
- How many rankine is 125 kelvin exactly?
- What is the formula to convert 125 kelvin to rankine?
- Is 125 kelvin warmer than 225 rankine or colder?
- Can I convert 125 kelvin to rankine without a calculator?
- What does 125 kelvin equal in rankine scale for engineering use?
- Why does converting 125 kelvin to rankine involve multiplying by 1.8?
- How to check if 125 kelvin converted to rankine is correct?
Conversion Definitions
Kelvin: Kelvin is the SI base unit of temperature, starting at absolute zero where all thermal motion stops. Unlike Celsius or Fahrenheit, kelvin does not use degrees but simply kelvin units. It’s widely used in science and engineering to measure thermodynamic temperature without negative values.
Rankine: Rankine is an absolute temperature scale similar to kelvin but based on Fahrenheit degrees. It starts at absolute zero, like kelvin, but each unit is equal to one Fahrenheit degree. Rankine is primarily used in thermodynamics and engineering fields in the United States.
Conversion FAQs
Can the conversion from kelvin to rankine result in negative values?
No, since both kelvin and rankine scales start at absolute zero, which is the lowest possible temperature, the converted values cannot be negative. Absolute zero is zero kelvin and zero rankine.
Why is the multiplication factor 1.8 used for kelvin to rankine?
The factor 1.8 comes from the size difference between Fahrenheit and Celsius degrees. Rankine uses Fahrenheit degree increments but starts at absolute zero like kelvin. Because each kelvin unit equals 1.8 Fahrenheit degree increments, multiplying by 1.8 converts kelvin to rankine.
Is it possible to convert rankine back to kelvin?
Yes, to convert rankine to kelvin, divide the rankine value by 1.8. This reverses the multiplication step, converting the temperature back from rankine units to kelvin units.
Does this conversion apply for temperature differences too?
Yes, temperature differences measured in kelvin can be converted to rankine differences by multiplying by 1.8. Since both scales start at absolute zero, difference conversion uses the same factor as absolute temperature conversion.
Are there practical applications where this conversion is used?
This conversion is used in thermodynamics, aerospace, and engineering fields, especially in the US, where rankine is preferred. Calculations involving gas laws, heat transfer, and engine performance often require converting between kelvin and rankine.