K to °F Conversion Calculator
Click on the following link if you want to convert Fahrenheit to Kelvin – °F to K
History
The Kelvin (K) scale was developed in 1848 by the British scientist William Thomson, known as Lord Kelvin.
It is an absolute temperature scale, starting from absolute zero (0 K), the lowest possible temperature where all molecular motion stops.
The Fahrenheit (°F) scale, created earlier in 1724 by Daniel Gabriel Fahrenheit, was based on water’s freezing and boiling points, but also on a few reference points related to brine mixtures and body temperature.
While the Kelvin scale is used in science, Fahrenheit is mostly used in everyday life in the United States.
Common Usage
- Kelvins (K) are used in physics, chemistry, and astronomy, where precise measurements are needed.
- Fahrenheit (°F) is used in daily weather reports, cooking, and home thermostats in the U.S.
For example, room temperature (about 293 K) equals 68°F.
Kelvins to Fahrenheit Conversion Formula
The Kelvin and Fahrenheit scales differ in both starting point and degree size.
The conversion formula is:
F = (K − 273.15) × 9/5 + 32
Example:
Convert 300 K to Fahrenheit.
(300 − 273.15) × 9/5 + 32 = 80.33°F
So, 300 K = 80.33°F.
Conversion Table
| Kelvin (K) | Fahrenheit (°F) |
|---|---|
| 0 K | -459.67 °F |
| 100 K | -279.67 °F |
| 200 K | -99.67 °F |
| 250 K | -9.67 °F |
| 273 K | 32.00 °F |
| 300 K | 80.33 °F |
| 310 K | 98.33 °F |
| 350 K | 170.33 °F |
| 400 K | 260.33 °F |
| 500 K | 440.33 °F |
Interesting Facts
- 0 K is absolute zero, where all molecular motion stops — it’s the coldest possible temperature.
- Body temperature (around 310 K) equals 98°F, which is why Fahrenheit originally chose that reference point.
- The Kelvin scale is the only one that doesn’t use the “degree” symbol.
Frequently Asked Questions
1. How do I convert Kelvins to Fahrenheit?
Use the formula: (K − 273.15) × 9/5 + 32.
2. What is 0 Kelvin in Fahrenheit?
−459.67°F, known as absolute zero.
3. What is 300 K in Fahrenheit?
80.33°F.
4. Why doesn’t Kelvin use the degree symbol?
Because it measures absolute temperature, not relative warmth or cold.
5. Where is Kelvin used?
In scientific research, physics, and space science.
