1 degree Fahrenheit = 255.928 kelvins
Convert degrees Fahrenheit to kelvins.
Both directions on one page — swap the units and the whole thing runs backwards.
Type a value, or “5cm to in”
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The formula
K = °F × 0.555556 + 255.372
Worked through with a real value: 25 degrees Fahrenheit = 269.261 kelvins.
Going the other way: °F = K × 1.8 − 459.67, so 1 kelvin = -457.87 degrees Fahrenheit.
What each unit is
- degree Fahrenheit °F
- Water freezes at 32 and boils at 212. Used for weather and cooking in the United States and a few of its neighbours.
- kelvin K
- The SI base unit. Zero is absolute zero, and a kelvin is the same size as a degree Celsius, so the two differ only by 273.15.
Where these come from
- 1 degree Fahrenheit is 0.5555555555555556 kelvins in size, counted from 255.3722222222222 K
Every other number on this page is computed from those, and each category is pinned to conversions worked out by hand from the units' primary definitions before it ships.
Conversion tables
| degrees Fahrenheit (°F) | kelvins (K) |
|---|---|
| -40 | 233.15 |
| -30 | 238.706 |
| -20 | 244.261 |
| -10 | 249.817 |
| 0 | 255.372 |
| 5 | 258.15 |
| 10 | 260.928 |
| 15 | 263.706 |
| 20 | 266.483 |
| 25 | 269.261 |
| 30 | 272.039 |
| 35 | 274.817 |
| 37 | 275.928 |
| 40 | 277.594 |
| 100 | 310.928 |
| kelvins (K) | degrees Fahrenheit (°F) |
|---|---|
| -40 | -531.67 |
| -30 | -513.67 |
| -20 | -495.67 |
| -10 | -477.67 |
| 0 | -459.67 |
| 5 | -450.67 |
| 10 | -441.67 |
| 15 | -432.67 |
| 20 | -423.67 |
| 25 | -414.67 |
| 30 | -405.67 |
| 35 | -396.67 |
| 37 | -393.07 |
| 40 | -387.67 |
| 100 | -279.67 |
Questions
What is 25 °F in K?
25 degrees Fahrenheit = 269.261 kelvins.
How do I convert degrees Fahrenheit to kelvins?
Use K = °F × 0.555556 + 255.372. The two scales have different zero points as well as different degree sizes, so a single multiplication is not enough.
What is 10 °F in K?
10 degrees Fahrenheit = 260.928 kelvins.
What is 100 °F in K?
100 degrees Fahrenheit = 310.928 kelvins.
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