Fahrenheit to Kelvin Converter
Convert °F to K instantly using K = °F × 0.5555555556 + 255.3722222.
Conversion Formula
K = °F × 0.5555555556 + 255.3722222
Example
25 °F × 0.5555555556 + 255.3722222 = 269.2611111 K
Convert the other way: Kelvin to Fahrenheit →
Fahrenheit to Kelvin Conversion Table
| Fahrenheit (°F) | Kelvin (K) |
|---|---|
| -40 | 233.15 |
| -20 | 244.2611111 |
| 0 | 255.3722222 |
| 10 | 260.9277778 |
| 20 | 266.4833333 |
| 25 | 269.2611111 |
| 30 | 272.0388889 |
| 37 | 275.9277778 |
| 50 | 283.15 |
| 100 | 310.9277778 |
| 180 | 355.3722222 |
| 200 | 366.4833333 |
About These Units
- Fahrenheit (°F)
- A temperature scale on which water freezes at 32 °F and boils at 212 °F at standard pressure, so one degree is exactly 5/9 of a kelvin. It is the everyday scale in the United States.
- Kelvin (K)
- The SI base unit of temperature, defined since 2019 by fixing the Boltzmann constant at exactly 1.380649×10⁻²³ J/K. Zero kelvin is absolute zero, and science, engineering, and light bulb color ratings all use it.
Frequently Asked Questions
How do I convert Fahrenheit to Kelvin?
Use the formula K = °F × 0.5555555556 + 255.3722222. For example, 25 °F × 0.5555555556 + 255.3722222 = 269.2611111 K. The scales have different zero points, so you cannot simply multiply.
What is 0 °F in K?
0 °F equals 255.3722222 K.
What is 100 °F in K?
100 °F equals 310.9277778 K.