Kelvins to degrees Fahrenheit
1 kelvin = -457.87 degrees Fahrenheit
Type a value in kelvins (K) to get degrees Fahrenheit (°F) straight away. Both units belong to temperature, measured here against the kelvin.
1 K = -457.87 °F
Formula
°F = (K − 273.15) × 9/5 + 32
Convert to Celsius by subtracting 273.15, then multiply by 9/5 and add 32. Here K is the value in kelvins and °F is the result in degrees Fahrenheit.
Worked example: 300 kelvins: put 300 into °F = (K − 273.15) × 9/5 + 32. The result is 80.33 degrees Fahrenheit.
Kelvins to degrees Fahrenheit table
| kelvins (K) | degrees 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 |
| 70 K | -333.67 °F |
| 80 K | -315.67 °F |
| 90 K | -297.67 °F |
| 100 K | -279.67 °F |
Everyday kelvins in degrees Fahrenheit
| What it is | K | °F |
|---|---|---|
| absolute zero | 0 K | -459.67 °F |
| liquid nitrogen boils | 77 K | -321.07 °F |
| water freezes | 273.15 K | 32 °F |
| body temperature | 310.15 K | 98.6 °F |
| water boils | 373.15 K | 212 °F |
Quick estimate in your head
Subtract 273 to get °C, then double and add 30 for a rough °F.
Watch out for
- Kelvin has no degree sign and never goes negative. 0 °C is 273.15 K.
- For a temperature change (not a reading), use only the 1.8 factor: a rise of 10 °C is a rise of 18 °F, not 50 °F.
About the units
Kelvin (K). The SI temperature unit. 0 K is absolute zero; a 1 K step is the same size as 1 °C.
Degree Fahrenheit (°F). Water freezes at 32 °F and boils at 212 °F. Used for weather and cooking in the US.
Going the other way, 1 degree Fahrenheit is 255.928 kelvins.
Questions
How many degrees Fahrenheit are in 1 kelvin?
1 kelvin is -457.87 degrees Fahrenheit, and 1 degree Fahrenheit is 255.928 kelvins.
How do I convert kelvins to degrees Fahrenheit?
Use °F = (K − 273.15) × 9/5 + 32. For example, 300 kelvins: put 300 into °F = (K − 273.15) × 9/5 + 32. The result is 80.33 degrees Fahrenheit.
At what temperature are Celsius and Fahrenheit equal?
At −40. −40 °C is exactly −40 °F, which is a quick way to check a formula.
How much is water boils in degrees Fahrenheit?
373.15 K is 212 °F.
Source for the conversion factor: BIPM SI Brochure (kelvin and degree Celsius).
Related conversions
- degrees Fahrenheit to kelvins
- degrees Celsius to degrees Fahrenheit
- degrees Fahrenheit to degrees Celsius
- kelvins to degrees Celsius
- degrees Celsius to kelvins