Fahrenheit to Kelvin
Easily switch from Fahrenheit to Kelvin with our quick and reliable tool. Designed for students, researchers, and professionals, it delivers accurate results without the hassle.
Fahrenheit to Kelvin conversion: Subtract 32 from the value in Fahrenheit, multiply by 5/9, and add 273.15.
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Fahrenheit (°F) is a unit of temperature measurement used primarily in the United States and its territories. It is part of the Imperial system and is denoted by the symbol °F. The Fahrenheit scale establishes 32°F as the freezing point of water and 212°F as the boiling point of water at standard atmospheric pressure. The Fahrenheit scale was developed by Daniel Gabriel Fahrenheit, a German-Polish physicist, in 1724. He proposed the scale based on three fixed points: the freezing point of water mixed with salt (0°F), the freezing point of pure water (32°F), and the average human body temperature (96°F, later adjusted to 98.6°F for accuracy). The scale gained popularity in English-speaking countries before being replaced by the Celsius scale in most of the world. Today, Fahrenheit is mainly used in the United States, its territories, and a few Caribbean nations for everyday temperature readings, including weather forecasts, cooking, and industrial applications. While scientific disciplines globally prefer Kelvin or Celsius, Fahrenheit remains integral in non-scientific contexts in these regions. Kelvin (K) is the base unit of temperature in the International System of Units (SI). It is used in scientific calculations and represents the absolute thermodynamic temperature scale. Unlike Fahrenheit and Celsius, Kelvin does not include the degree symbol (°), and its scale starts from absolute zero (0 K), the point at which molecular motion ceases. The Kelvin scale was introduced by William Thomson, also known as Lord Kelvin, in the mid-19th century. He developed the scale based on the principles of thermodynamics, defining absolute zero as – the theoretical point where entropy reaches its minimum value. Kelvin’s work was foundational in advancing the understanding of thermodynamics and physical laws. Kelvin is widely used in scientific fields such as physics, chemistry, and astronomy. It is essential in research involving temperature-dependent phenomena and is used for thermodynamic temperature measurements. Unlike Fahrenheit or Celsius, Kelvin provides a direct link to the laws of thermodynamics, making it indispensable in advanced scientific studies. To convert Fahrenheit (°F) to Kelvin (K), the following formula is used: [ K = \frac{5}{9} × (\text{°F} - 32) + 273.15 ] Here: Subtract 32 from the Fahrenheit value. Multiply the result by 5/9 to convert it to Celsius. Add 273.15 to convert Celsius to Kelvin. Start with the formula: [ K = \frac{5}{9} × (\text{°F} - 32) + 273.15 ] Subtract 32 from the Fahrenheit value: [ 100 - 32 = 68 ] Multiply the result by 5/9: [ \frac{5}{9} × 68 = 37.78 ] Add 273.15 to convert Celsius to Kelvin: [ 37.78 + 273.15 = 310.93 K ] So, 100°F equals 310.93 K. Fahrenheit: 32°F Conversion: [ K = \frac{5}{9} × (32 - 32) + 273.15 = 273.15 K ] Result: 32°F equals 273.15 K, the freezing point of water. Fahrenheit: 212°F Conversion: [ K = \frac{5}{9} × (212 - 32) + 273.15 ] [ K = \frac{5}{9} × 180 + 273.15 = 373.15 K ] Result: 212°F equals 373.15 K, the boiling point of water.Fahrenheit
Definition
History/Origin
Current Use
Kelvin
Definition
History/Origin
Current Use
Conversion Details
Conversion Formula and Factor
Quick Reference Conversion Table
Step-by-Step Conversion Instructions
Example: Convert 100°F to Kelvin
Practical Examples
Example 1: Freezing Point of Water
Example 2: Boiling Point of Water
Common Conversions
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Frequently Asked Questions
To convert Fahrenheit to Kelvin, use the formula K = (F - 32) × 5/9 + 273.15. For example, 68°F converts to 293.15 K.
