Convert Fahrenheit to Kelvin
Fahrenheit (°F) to Kelvin (K) — the formula, a worked example and a live converter, all in your browser.
Fahrenheit to Kelvin formula
Temperature scales don't share a zero point, so the conversion uses an offset formula rather than a simple ratio:
K = (°F − 32) × 5/9 + 273.15
Worked example
20 °F = 20 = 266.4833333 K.
Fahrenheit to Kelvin conversion table
| Fahrenheit (°F) | Kelvin (K) |
|---|---|
| -40 | 233.15 |
| 0 | 255.3722222 |
| 20 | 266.4833333 |
| 37 | 275.9277778 |
| 100 | 310.9277778 |
Common uses
Useful in lab work that records temperatures in Fahrenheit but reports results on the Kelvin scale.
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Frequently asked questions
What is the formula to convert fahrenheit to kelvin?
Use K = (°F − 32) × 5/9 + 273.15.
What is 20°F in kelvin?
20°F equals 266.4833333K.
Is this converter accurate?
Yes. It uses the exact internationally-defined conversion factors and runs entirely in your browser, so results match standards tables and nothing you type is uploaded.