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Fahrenheit to Kelvin converter
Enter a number, fraction, power, π, or arithmetic expression.1 °F = 255.927777778 K K = (°F − 32) × 5/9 + 273.15
Ready for local conversionFahrenheit to Kelvin formula
K = (°F − 32) × 5/9 + 273.15
Subtract 32, multiply by 5/9, then add 273.15
The formula first maps Fahrenheit to Celsius and then applies the exact 273.15 offset between Celsius and kelvin.
How to convert Degrees Fahrenheit to Kelvin
Subtract 32 from Fahrenheit, multiply by 5/9, and add 273.15. Keeping the sequence intact avoids errors from combining two offset scales.
Example calculation
The freezing point 32 °F is exactly 273.15 K: (32 − 32) × 5/9 + 273.15 = 273.15.
32 °F = 273.15 K
When this conversion is useful
Use Fahrenheit to kelvin when US temperature readings must enter scientific equations, engineering specifications, or absolute-temperature datasets.
Common Degrees Fahrenheit to Kelvin conversions
| Degrees Fahrenheit (°F) | Kelvin (K) |
|---|---|
| -459.67 | -2.84217094304e-14 |
| -40 | 233.15 |
| 32 | 273.15 |
| 68 | 293.15 |
| 212 | 373.15 |
| 451 | 505.927777778 |
Fahrenheit to Kelvin FAQ
Use K = (°F − 32) × 5/9 + 273.15.
Absolute zero is −459.67 °F, corresponding to 0 K.
No. The scales differ in both interval size and zero point, so multiplication and offsets are required.