Fahrenheit to Kelvin (°F to K)

Convert degrees Fahrenheit to kelvin instantly with the formula K = (°F − 32) × 5/9 + 273.15. Includes worked examples and a full °F to K table.

How to convert degrees Fahrenheit to kelvin

The two scales have different zero points, so you need a formula rather than a single factor:

K = (°F − 32) × 5/9 + 273.15

Examples

  • (32 − 32) × 5/9 + 273.15 = 273.15 K
  • (70 − 32) × 5/9 + 273.15 = 294.2611111 K
  • (212 − 32) × 5/9 + 273.15 = 373.15 K

°F to K conversion table

Degrees Fahrenheit (°F)Kelvin (K)
−40 °F233.15 K
−20 °F244.2611111 K
−10 °F249.8166667 K
0 °F255.3722222 K
10 °F260.9277778 K
20 °F266.4833333 K
25 °F269.2611111 K
30 °F272.0388889 K
35 °F274.8166667 K
36.6 °F275.7055556 K
37 °F275.9277778 K
38 °F276.4833333 K
40 °F277.5944444 K
50 °F283.15 K
60 °F288.7055556 K
80 °F299.8166667 K
100 °F310.9277778 K
150 °F338.7055556 K
180 °F355.3722222 K
200 °F366.4833333 K
250 °F394.2611111 K

What is a degree Fahrenheit?

The Fahrenheit scale puts water's freezing point at 32 °F and boiling point at 212 °F. It is mainly used in the US.

What is a kelvin?

The kelvin is the SI unit of temperature. It starts at absolute zero (0 K = −273.15 °C) and uses the same step size as Celsius.

Related conversions

Kelvin to degrees FahrenheitDegrees Celsius to degrees FahrenheitDegrees Fahrenheit to degrees CelsiusDegrees Celsius to kelvinKelvin to degrees CelsiusAll temperature units

Frequently asked questions

How do I convert degrees Fahrenheit to kelvin?

Use the formula K = (°F − 32) × 5/9 + 273.15.

What is 70 °F in K?

70 °F = 294.2611111 K.

What is 212 °F in K?

212 °F = 373.15 K.