Fahrenheit to Kelvin
1 °F =255.92777778K
About Fahrenheit to Kelvin
Fahrenheit to Kelvin conversion bridges the everyday US temperature scale and the absolute scale used in science. Kelvin starts at absolute zero, so the formula combines the Fahrenheit-to-Celsius step with the 273.15 offset to Kelvin.
To convert Fahrenheit to Kelvin: K = (°F − 32) × 5/9 + 273.15.
For example, 32°F → (32 − 32) × 5/9 + 273.15 = 273.15 K, the freezing point of water. And 212°F → 373.15 K, the boiling point.
Fahrenheit to Kelvin table
| Fahrenheit (°F) | Kelvin (K) |
|---|---|
| -459.67 | 0 |
| -40 | 233.15 |
| 0 | 255.37222222 |
| 32 | 273.15 |
| 68 | 293.15 |
| 98.6 | 310.15 |
| 100 | 310.92777778 |
| 212 | 373.15 |
| 300 | 422.03888889 |
| 451 | 505.92777778 |
Common use cases
- 01Converting US weather or lab temperatures to absolute Kelvin
- 02Physics and chemistry homework and experiments
- 03Engineering thermal calculations
- 04Translating Fahrenheit data for scientific use
A bit of history
The Kelvin scale was proposed by William Thomson (Lord Kelvin) in 1848, setting its zero at absolute zero. It shares the size of the Celsius degree, which is why the Fahrenheit conversion routes through Celsius first.
Frequently asked questions
What is 32°F in Kelvin?+
32°F equals 273.15 K — the freezing point of water.
What is 212°F in Kelvin?+
212°F equals 373.15 K — the boiling point of water at sea level.
What is the formula for Fahrenheit to Kelvin?+
K = (°F − 32) × 5/9 + 273.15.
What is absolute zero in Fahrenheit?+
Absolute zero (0 K) is −459.67°F.
Need the reverse?
Convert Kelvin to Fahrenheit →