How to Convert Fahrenheit to Kelvin

To convert Fahrenheit to Kelvin, subtract 32 from the Fahrenheit value and multiply your result by 5/9 and then add 273.15.
To convert Fahrenheit to Kelvin, subtract 32 from the Fahrenheit value and multiply your result by 5/9 and then add 273.15. nikamata, Getty Images

Fahrenheit and Kelvin are two common temperature scales. The Fahrenheit scale is used in the United States, while Kelvin is an absolute temperature scale, used worldwide for scientific calculations. While you might think this conversion wouldn't occur much, it turns out there is a lot of scientific and engineering equipment that uses the Fahrenheit scale! Fortunately, it is easy to convert Fahrenheit to Kelvin.

Fahrenheit to Kelvin Method #1

  1. Subtract 32 from the Fahrenheit temperature.
     
  2. Multiply this number by 5.
     
  3. Divide this number by 9.
     
  4. Add 273.15 to this number.

The answer will be the temperature in Kelvin. Note that while Fahrenheit has degrees, Kelvin does not.

Fahrenheit to Kelvin Method #2

You can use the conversion equation to perform the calculation. This is especially easy if you have a calculator that allows you to enter the whole equation, but it's not difficult to solve by hand.

TK = (TF + 459.67) x 5/9

For example, to convert 60 degrees Fahrenheit to Kelvin:

TK = (60 + 459.67) x 5/9

TK = 288.71 K

Fahrenheit to Kelvin Conversion Table

You can also estimate a temperature by looking up the closest value on a conversion table. There is a temperature where the Fahrenheit and Celsius scales read the same temperature. Fahrenheit and Kelvin read the same temperature at 574.25.

Fahrenheit (°F)Kelvin (K)
-459.67 °F0 K
-50 °F227.59 K
-40 °F233.15 K
-30 °F238.71 K
-20 °F244.26 K
-10 °F249.82 K
0 °F255.37 K
10 °F260.93 K
20 °F266.48 K
30 °F272.04 K
40 °F277.59 K
50 °F283.15 K
60 °F288.71 K
70 °F294.26 K
80 °F299.82 K
90 °F305.37 K
100 °F310.93 K
110 °F316.48 K
120 °F322.04 K
130 °F327.59 K
140 °F333.15 K
150 °F338.71 K
160 °F344.26 K
170 °F349.82 K
180 °F355.37 K
190 °F360.93 K
200 °F366.48 K
300 °F422.04 K
400 °F477.59 K
500 °F533.15 K
600 °F588.71 K
700 °F644.26 K
800 °F699.82 K
900 °F755.37 K
1000 °F810.93 K

Do Other Temperature Conversions

There are other temperature scales you might need to use, so here are more examples of conversions and their formulas:

How to Convert Celsius to Fahrenheit
How to Convert Fahrenheit to Celsius
How to Convert Celsius to Kelvin
How to Convert Kelvin to Fahrenheit
How to Convert Kelvin to Celsius