Convert Fahrenheit to Kelvin
Enter a temperature in Fahrenheit to see it in Kelvin. Conversion runs in your browser.
Fahrenheit to Kelvin formula
K = ((°F+459.67)*5/9)Temperature scales differ in both their zero point and their degree size, so a conversion needs a multiplication and an offset — unlike length or weight, where a single factor is enough.
Conversion table
| Fahrenheit (°F) | Kelvin (K) |
|---|---|
| -40°F | 233.15K |
| -20°F | 244.261111K |
| 0°F | 255.372222K |
| 10°F | 260.927778K |
| 20°F | 266.483333K |
| 25°F | 269.261111K |
| 30°F | 272.038889K |
| 37°F | 275.927778K |
| 50°F | 283.15K |
| 75°F | 297.038889K |
| 100°F | 310.927778K |
| 200°F | 366.483333K |
About Fahrenheit
The Fahrenheit scale puts water’s freezing point at 32° and its boiling point at 212°, and is used mainly in the United States.
About Kelvin
The kelvin is the SI base unit of temperature, starting at absolute zero; it uses the same degree size as Celsius.
Frequently asked questions
What is 0°F in Kelvin?
0°F equals 255.372222K.
What is normal body temperature?
37°C — about 310.15K.
At what temperature do the two scales meet?
Only Celsius and Fahrenheit cross, at −40°. Kelvin and Rankine both start at absolute zero and never go negative.