Fahrenheit to Kelvin
( °F → K )
Instantly convert Fahrenheit to Kelvin. Enter any value below and get an accurate result with the full formula and reference table.
How to Convert Fahrenheit to Kelvin
To convert Fahrenheit to Kelvin, subtract 32, multiply by 5/9, then add 273.15. This combines the Fahrenheit-to-Celsius conversion with the Celsius-to-Kelvin offset.
Step-by-Step Example
Let’s convert 68°F to Kelvin:
1. Subtract 32: 68 – 32 = 36
2. Multiply by 5/9: 36 × 5/9 = 20
3. Add 273.15: 20 + 273.15 = 293.15
4. So 68°F equals 293.15 K.
Another common example: 212°F (boiling point of water) → (212 – 32) × 5/9 + 273.15 = 180 × 5/9 + 273.15 = 100 + 273.15 = 373.15 K.
Note on Absolute Zero
Absolute zero is 0 K = -459.67°F. The Kelvin scale is an absolute temperature scale used in science.
When You’d Use Each Unit
Fahrenheit is used in the United States for everyday temperatures. Kelvin is the SI unit for temperature and is used in physics, chemistry, and engineering. Converting between them is essential for scientific work when dealing with U.S. data.
Common Fahrenheit values converted to Kelvin — typical values highlighted.
| Fahrenheit (°F) | Kelvin (K) | Approximate |
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