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Fahrenheit to Kelvin Converter

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📚 Examples, Formula, and How To

📝 Fahrenheit to Kelvin Formula

Fahrenheit to Kelvin

K = (°F - 32) × 5/9 + 273.15

To convert Fahrenheit to Kelvin, subtract 32, multiply by 5/9, then add 273.15. This accounts for both the different zero points and scale differences.

Kelvin to Fahrenheit

°F = (K - 273.15) × 9/5 + 32

To convert Kelvin to Fahrenheit, subtract 273.15, multiply by 9/5, then add 32. This is the inverse of the Fahrenheit to Kelvin conversion.

💡 Converting Fahrenheit to Kelvin

Example 1

Convert: 32°F to Kelvin

1

Start with the conversion formula: K = (°F - 32) × 5/9 + 273.15

2

Substitute the value: K = (32 - 32) × 5/9 + 273.15

3

Calculate: K = 0 × 5/9 + 273.15 = 273.15

Result:273.15 K

Example 2

Convert: 212°F to Kelvin

1

Start with the conversion formula: K = (°F - 32) × 5/9 + 273.15

2

Substitute the value: K = (212 - 32) × 5/9 + 273.15

3

Calculate: K = 180 × 5/9 + 273.15 = 100 + 273.15 = 373.15

Result:373.15 K

Example 3

Convert: 98.6°F to Kelvin

1

Start with the conversion formula: K = (°F - 32) × 5/9 + 273.15

2

Substitute the value: K = (98.6 - 32) × 5/9 + 273.15

3

Calculate: K = 66.6 × 5/9 + 273.15 = 37 + 273.15 = 310.15

Result:310.15 K

📊 Fahrenheit to Kelvin Conversion Table

Common Fahrenheit to Kelvin Conversions

FahrenheitKelvin
0°F255.37 K
32°F273.15 K
50°F283.15 K
68°F293.15 K
86°F303.15 K
98.6°F310.15 K
100°F310.93 K
212°F373.15 K

All values are rounded to 4 decimal places for practical use

⚙️ How to Convert Fahrenheit to Kelvin

1

Temperature Scales

Fahrenheit and Kelvin are different temperature scales

Fahrenheit is commonly used in the US, while Kelvin is the scientific standard.

2

Fahrenheit to Kelvin

Use the formula: K = (°F - 32) × 5/9 + 273.15

Enter a value in Fahrenheit to convert to Kelvin.

3

Kelvin to Fahrenheit

Use the formula: °F = (K - 273.15) × 9/5 + 32

Enter a value in Kelvin to convert to Fahrenheit.

📚 What are Fahrenheit and Kelvin?

📏 Fahrenheit(°F)

Definition:

Fahrenheit is a temperature scale where the freezing point of water is 32°F and the boiling point is 212°F at standard atmospheric pressure.

History:

Created by Daniel Gabriel Fahrenheit in 1724. Originally based on the temperature of a mixture of ice, water, and ammonium chloride.

Common Uses:
  • Weather reports in the United States
  • Cooking and baking in American recipes
  • Medical thermometers in the US
  • HVAC systems in North America
  • Industrial processes in the US
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Fun Fact:

Fahrenheit originally set 0°F as the coldest temperature he could create in his lab using a mixture of ice and salt! The human body temperature was originally set at 96°F in his scale.

📏 Kelvin(K)

Definition:

Kelvin is the base unit of temperature in the International System of Units (SI). It starts at absolute zero and uses the same scale intervals as Celsius.

History:

Named after Lord Kelvin (William Thomson) in 1848. It's based on absolute zero, the theoretical temperature where all molecular motion ceases.

Common Uses:
  • Scientific research and calculations
  • Physics and chemistry laboratories
  • Astronomy and space science
  • Engineering thermodynamics
  • International scientific standards
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Fun Fact:

Kelvin is the only temperature scale that doesn't use degree symbols - we say '300 K', not '300°K'! Absolute zero (0 K) is -459.67°F - cold enough to stop all atomic motion!