Fahrenheit to Kelvin Converter
Convert Fahrenheit to Kelvin instantly using the formula K = (°F − 32) × 5/9 + 273.15. Enter any Fahrenheit value below to get the Kelvin result, formula step, and common temperature references.
Fahrenheit to Kelvin Conversion Table
Need a quick reference without using the Fahrenheit to Kelvin calculator? Use this chart for common weather, body temperature, oven, and science conversions.
| Fahrenheit (°F) | Kelvin (K) |
|---|---|
| −459.67°F | 0 K |
| −320.8°F | 77.15 K |
| −40°F | 233.15 K |
| 0°F | 255.37 K |
| 20°F | 266.48 K |
| 32°F | 273.15 K |
| 40°F | 277.59 K |
| 50°F | 283.15 K |
| 59°F | 288.15 K |
| 68°F | 293.15 K |
| 70°F | 294.26 K |
| 72°F | 295.37 K |
| 77°F | 298.15 K |
| 86°F | 303.15 K |
| 98.6°F | 310.15 K |
| 100°F | 310.93 K |
| 104°F | 313.15 K |
| 122°F | 323.15 K |
| 140°F | 333.15 K |
| 158°F | 343.15 K |
| 176°F | 353.15 K |
| 194°F | 363.15 K |
| 212°F | 373.15 K |
| 302°F | 423.15 K |
| 392°F | 473.15 K |
| 451°F | 505.93 K |
The Fahrenheit to Kelvin Conversion Formula
To convert Fahrenheit to Kelvin, first convert the Fahrenheit value into Celsius, then shift that Celsius value to the absolute Kelvin scale by adding 273.15.
Fahrenheit and Kelvin do not share the same zero point or interval size. Fahrenheit sets water freezing at 32°F and boiling at 212°F, while Kelvin starts at absolute zero. That is why this conversion needs both a rescale and an offset.
Worked Examples
Reverse Operation
Working backward? Subtract 273.15 from the Kelvin value, multiply by 9/5, then add 32, or use our dedicated Kelvin to Fahrenheit Converter →.
How to Convert Fahrenheit to Kelvin
Wondering how to convert Fahrenheit to Kelvin manually? Follow this direct process.
Understanding Fahrenheit and Kelvin
Fahrenheit is commonly used for weather, body temperature, ovens, and home temperature settings in the United States. Kelvin is the absolute temperature scale used in science, physics, chemistry, astronomy, and engineering.
The key difference is the zero point. Kelvin starts at absolute zero, the theoretical lowest possible temperature. Fahrenheit starts from a different historical reference scale, so converting from Fahrenheit to Kelvin requires a full formula rather than a simple addition.
Extended Fahrenheit to Kelvin Chart
Browse common Fahrenheit values. Click any pair to load it into the converter above.
Fahrenheit to Kelvin FAQs
K = (°F − 32) × 5/9 + 273.15. This is the exact
formula used for °F to K conversion.
K = (°F − 32) × 5/9 + 273.15.
K = (0 − 32) × 5/9 + 273.15 = 255.372222... K.
K = (70 − 32) × 5/9 + 273.15 = 294.261111... K.
K = (100 − 32) × 5/9 + 273.15 = 310.927777... K.
K = (°F − 32) × 5/9 + 273.15. It is also called the
Fahrenheit to Kelvin equation or the
°F to K conversion formula.