Conversion
Fahrenheit to Kelvin Converter
Convert degrees Fahrenheit to kelvin instantly with a simple, free calculator.
Formula
Kelvin = (Fahrenheit − 32) × 5/9 + 273.15. The 32 shift aligns the freezing point of water, the 5/9 scales Fahrenheit degrees to Celsius degrees, and 273.15 shifts Celsius to Kelvin.
How it works
Enter a Fahrenheit temperature and the calculator converts it to Kelvin, the absolute temperature scale used in science. Results below absolute zero cannot occur in reality, so a very low input that gives a negative Kelvin value indicates an impossible temperature.
FAQs
Can Kelvin be negative?
No. Zero kelvin is absolute zero, the lowest possible temperature, so a real Kelvin reading is never negative.
Why is Kelvin used instead of Celsius in science?
Kelvin starts at absolute zero and has no negative values, which makes formulas for gas laws and thermodynamics simpler and avoids sign errors.
What is 32 °F in Kelvin?
32 °F is the freezing point of water, which equals 273.15 K.