In 1 fahrenheit there are 255.927778 kelvin. Meanwhile in 1 kelvin there are -457.87 fahrenheit. Keep reading to learn more about each unit of measure and how they are calculated. Or just use the Kelvin to Fahrenheit calculator above to convert any number.
* Values rounded to 6 decimal places for readability
To convert Fahrenheit to Kelvin, use a simple two-step formula based on absolute temperature.
K = (°F − 32) × 5/9 + 273.15
Key points to remember:
Example:
To convert Fahrenheit to Kelvin, use this formula:
K = (°F − 32) × 5/9 + 273.15
Kelvin uses no degree symbol. Write it as K, not °K.
32°F = 273.15 K
32°F is the freezing point of water, which matches 273.15 K.
0°F = 255.372 K
Using the formula: (0 − 32) × 5/9 + 273.15 = 255.372.
100°F = 310.928 K
Using the formula: (100 − 32) × 5/9 + 273.15 = 310.928.
Kelvin starts at absolute zero, the lowest possible temperature.
Celsius sets water freezing at 0°C, which equals 273.15 K.
After converting Fahrenheit to Celsius, you add 273.15 to shift to Kelvin.
Absolute zero is:
No. Kelvin can’t go below 0 K.
A negative Kelvin value means the conversion or input is wrong.
Rounding depends on your use.
To convert Kelvin to Fahrenheit, use:
°F = (K − 273.15) × 9/5 + 32
This reverses the same steps in the opposite direction.
Common errors include:
The Calculate Box tool to convert fahrenheit to kelvin uses the open source script Convert.js to convert units of measurement. To use this tool, simply type a fahrenheit value in the box and have it instantly converted to kelvin.