Degrees Fahrenheit to Kelvin Converter
Convert degrees Fahrenheit to kelvin using K = (°F - 32) × 5/9 + 273.15. The formula is K = (°F - 32) × 5/9 + 273.15; 1 °F is 255.93 K.
A temperature scale commonly used in the United States.
The SI temperature scale measured from absolute zero.
Start with your value in degrees Fahrenheit, then apply the formula below. It stays visible so you can catch rounding mistakes instead of just copying the output.
Use the converted temperature for weather, cooking, lab notes, thermostats, and thermal references, but remember that context such as pressure can affect boiling and freezing points.
The formula stays visible because multiplying by a factor alone is not enough when the scale has a shifted zero point. This page displays converted values with up to 2 decimal places by default.
| Degrees Fahrenheit | Kelvin |
|---|---|
| -40 °F | 233.15 K |
| 32 °F | 273.15 K |
| 68 °F | 293.15 K |
| 98.6 °F | 310.15 K |
| 212 °F | 373.15 K |
Useful for comparing weather and outdoor temperatures. Use the same formula with your exact input if the measurement needs to be documented.
Useful for cooking, appliance, and HVAC settings. Use the same formula with your exact input if the measurement needs to be documented.
Useful for science lab and engineering references. Use the same formula with your exact input if the measurement needs to be documented.
How do I convert degrees Fahrenheit to kelvin?
Enter the value in degrees Fahrenheit and apply K = (°F - 32) × 5/9 + 273.15. Round the kelvin result after the conversion, not before.
What is 1 degree Fahrenheit in kelvin?
1 °F equals 255.93 K with the current rounding setting. Keep more decimal places when the result feeds another calculation.
What is -40 °F in K?
-40 °F is 233.15 K. It appears in the lookup table so you can compare it with nearby amounts.
Can I convert kelvin back to degrees Fahrenheit?
Yes. Use the reverse Kelvin to Degrees Fahrenheit converter if you need to go the other direction.
How accurate is this degrees Fahrenheit to kelvin conversion?
The calculator runs the formula in your browser and rounds results to 2 decimal places by default. The formula stays visible because multiplying by a factor alone is not enough when the scale has a shifted zero point.