How to convert kelvin to degrees Fahrenheit
°F = (K − 273.15) × 9/5 + 32
Example: 25 K → -414.67 °F
Temperature scales have different zero points, so you cannot convert them with a single multiplication factor.
Kelvin to Fahrenheit table
| Kelvin (K) | Fahrenheit (°F) |
|---|---|
| -40 K | -531.67 °F |
| -20 K | -495.67 °F |
| -10 K | -477.67 °F |
| 0 K | -459.67 °F |
| 10 K | -441.67 °F |
| 15 K | -432.67 °F |
| 20 K | -423.67 °F |
| 25 K | -414.67 °F |
| 30 K | -405.67 °F |
| 35 K | -396.67 °F |
| 37 K | -393.07 °F |
| 40 K | -387.67 °F |
| 50 K | -369.67 °F |
| 60 K | -351.67 °F |
| 80 K | -315.67 °F |
| 100 K | -279.67 °F |
| 150 K | -189.67 °F |
| 200 K | -99.67 °F |
About these units
Kelvin (K): The kelvin (K) is the SI unit of temperature. It starts at absolute zero (0 K = −273.15 °C) and uses the same step size as Celsius.
Fahrenheit (°F): Fahrenheit (°F) puts water’s freezing point at 32° and boiling point at 212°. It is used for everyday temperatures in the United States.
Frequently asked questions
How do you convert kelvin to degrees Fahrenheit?
To convert kelvin to degrees Fahrenheit, use °F = (K − 273.15) × 9/5 + 32. For example, 25 K = -414.67 °F.
How do I convert K to °F?
Use the formula °F = (K − 273.15) × 9/5 + 32. For example, 25 K gives -414.67 °F.
How do I convert degrees Fahrenheit back to kelvin?
Use the reverse formula on our Fahrenheit to Kelvin page, or press Swap in the converter above.
What is the Kelvin scale?
The kelvin (K) is the SI unit of temperature. It starts at absolute zero (0 K = −273.15 °C) and uses the same step size as Celsius.
Conversion factors come from exact international definitions (NIST SP 811, BIPM) where they exist. Results show up to 10 significant digits. Need every temperature unit at once? Use the Temperature Converter.