Kelvin to Fahrenheit Converter
To convert kelvin to Fahrenheit, multiply by 9/5 and subtract 459.67. Room temperature of 300 K is 80.33 °F.
How to Convert Kelvin to Fahrenheit
To convert kelvin to degrees Fahrenheit, multiply by 9/5, then subtract 459.67.
For example: 300 K × 9/5 = 540, and 540 − 459.67 = 80.33 °F.
Where This Comes Up
Scientific and astronomical sources publish temperatures in kelvin, and American readers need Fahrenheit to picture them. Everything from the cosmic microwave background to a star surface arrives this way.
The surface of the Sun at about 5,778 K is 9,940.73 °F.
What People Get Wrong
The result for low kelvin values is strongly negative and easy to mistype. 100 K is -279.67 °F, colder than anything that occurs naturally at the Earth’s surface.
Kelvin to Fahrenheit Conversion Table
| Kelvin (K) | Degrees Fahrenheit (°F) |
|---|---|
| 0 | -459.67 |
| 100 | -279.67 |
| 200 | -99.67 |
| 250 | -9.67 |
| 273.15 | 32 |
| 280 | 44.33 |
| 290 | 62.33 |
| 300 | 80.33 |
| 310 | 98.33 |
| 350 | 170.33 |
| 373.15 | 212 |
| 400 | 260.33 |
| 500 | 440.33 |
| 750 | 890.33 |
| 1,000 | 1,340.33 |
About These Units
The kelvin
The kelvin is the SI base unit of temperature and starts at absolute zero, the point where thermal motion stops. A change of 1 kelvin is exactly the same size as a change of 1 degree Celsius, and kelvin is written without a degree sign.
The degree Fahrenheit
On the Fahrenheit scale water freezes at 32 degrees and boils at 212 degrees, so one Fahrenheit degree is 5/9 the size of a Celsius degree. It remains the standard scale for weather, ovens and body temperature in the United States.
Definitions follow The SI Brochure, BIPM. See how we calculate for the exact values and rounding rules.
Frequently Asked Questions
What is the formula for kelvin to Fahrenheit?
Fahrenheit equals kelvin times 9/5 minus 459.67. For 300 K that is 540 minus 459.67, or 80.33 °F.
What is 0 K in Fahrenheit?
Absolute zero, 0 K, is -459.67 °F.
What is 273.15 K in Fahrenheit?
Exactly 32 °F, the freezing point of water.
Is 300 K room temperature?
Roughly. 300 K is 80.33 °F, a little warmer than the 68 to 72 °F most buildings are kept at.