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## How to convert Kelvin to Fahrenheit (K to °F)

The formula for converting Kelvin to Fahrenheit is: °F = K × 9⁄5 - 459.67. To calculate the Kelvin value in Fahrenheit first substitute the Kelvin value into the preceding formula, and then perform the calculation. If we wanted to calculate 1 Kelvin in Fahrenheit we follow these steps:

°F = K × 9⁄5 - 459.67

°F = 1 × 9⁄5 - 459.67

°F = -457.87

In other words, 1 Kelvin is equal to -457.87 Fahrenheit.

## Example Conversion

Let's take a look at an example. The step-by-step process to convert 9 Kelvin to Fahrenheit is:

- Understand the conversion formula: °F = K × 9⁄5 - 459.67
- Substitute the required value. In this case we substitute 9 for K so the formula becomes: °F = 9 × 9⁄5 - 459.67
- Calculate the result using the provided values. In our example the result is: 9 × 9⁄5 - 459.67 = -443.47 °F

In summary, 9 Kelvin is equal to -443.47 Fahrenheit.

## Converting Fahrenheit to Kelvin

In order to convert the other way around i.e. Fahrenheit to Kelvin, you would use the following formula: K = (°F + 459.67) × 5⁄9. To convert Fahrenheit to Kelvin first substitute the Fahrenheit value into the above formula, and then execute the calculation. If we wanted to calculate 1 Fahrenheit in Kelvin we follow these steps:

K = (°F + 459.67) × 5⁄9

K = (1 + 459.67) × 5⁄9

K = 255.92777777777778

Or in other words, 1 Fahrenheit is equal to 255.92777777777778 Kelvin.

## Conversion Unit Definitions

### What is a Kelvin?

Absolute Temperature Scale: The Kelvin scale is an absolute temperature scale that measures temperature relative to absolute zero. It is named after the Scottish physicist William Thomson, 1st Baron Kelvin, who proposed the scale in the 19th century.

Zero Point: The Kelvin scale uses absolute zero as its zero point, which is the lowest possible temperature. At absolute zero, all molecular motion theoretically stops. Absolute zero on the Kelvin scale is equivalent to -273.15 degrees Celsius or -459.67 degrees Fahrenheit.

Metric System: The Kelvin scale is part of the metric system, which is a decimal-based system of measurement used internationally. It is the standard unit of temperature measurement in the International System of Units (SI).

Conversion: Kelvin can be converted to other temperature scales. To convert Kelvin to Celsius, you subtract 273.15 from the Kelvin measurement. To convert Kelvin to Fahrenheit, you first convert it to Celsius using the above formula and then use the conversion formula from Celsius to Fahrenheit.

Symbol: The symbol for Kelvin is "K". For example, a temperature measurement of 300 Kelvin would be written as 300 K.

Common Uses: The Kelvin scale is primarily used in scientific, technical, and international contexts. It is commonly employed in fields such as physics, chemistry, astronomy, and engineering. Kelvin is particularly useful in calculations involving temperature and energy, as it represents absolute temperature.

International Usage: The Kelvin scale is widely accepted and used internationally as a standard unit of temperature measurement, especially in scientific research, academic settings, and industrial applications. Its usage promotes consistency, compatibility, and ease of communication across different regions and scientific disciplines.

### What is a Fahrenheit?

Temperature Scale: The Fahrenheit scale divides the temperature range between the freezing and boiling points of water into 180 equal divisions or degrees. On this scale, the freezing point of water is defined as 32 degrees Fahrenheit (°F), and the boiling point of water is defined as 212 degrees Fahrenheit (°F) at standard atmospheric pressure.

Origin: The Fahrenheit scale was originally based on three reference points: the freezing point of a brine solution, the average human body temperature, and the body temperature of horses. However, over time, these reference points have been refined and standardized to the freezing and boiling points of water.

Metric System: Fahrenheit is not part of the metric system but is still used in certain countries. It is primarily used in the United States, along with a few other nations that have historical ties to the United States or limited cultural influences from it.

Conversion: Fahrenheit can be converted to other temperature scales. One common conversion is to Celsius. The formula to convert Fahrenheit to Celsius is: Celsius = (Fahrenheit - 32) x 5/9. Fahrenheit can also be converted to the Kelvin scale by first converting to Celsius and then adding 273.15.

Symbol: The symbol for degrees Fahrenheit is "°F". For example, a temperature measurement of 75 degrees Fahrenheit would be written as 75 °F.

Common Uses: Fahrenheit is commonly used in everyday contexts in countries that primarily use the Fahrenheit scale. It is used in weather forecasts, discussions of outdoor temperatures, oven and cooking temperatures, and temperature readings on household thermometers.

International Usage: The Fahrenheit scale is not widely used internationally, as the Celsius scale is the standard for temperature measurement in most countries around the world. However, it is still relevant and used in the United States and a few other nations.

## Kelvin To Fahrenheit Conversion Table

Below is a lookup table showing common Kelvin to Fahrenheit conversion values.

Kelvin (K) | Farenheit (°F) |
---|---|

1 K | -457.87 °F |

2 K | -456.07 °F |

3 K | -454.27 °F |

4 K | -452.47 °F |

5 K | -450.67 °F |

6 K | -448.87 °F |

7 K | -447.07 °F |

8 K | -445.27 °F |

9 K | -443.47 °F |

10 K | -441.67 °F |

11 K | -439.87 °F |

12 K | -438.07 °F |

13 K | -436.27 °F |

## Other Common Kelvin Conversions

Below is a table of common conversions from Kelvin to other temperature units.

Conversion | Result |
---|---|

1 Kelvin in Rankine | 1.8 °R |

1 Kelvin in Celsius | -272.15 °C |