Unit definitions

Fahrenheit

Fahrenheit is a scale commonly used in the United States. Temperature in $^{\circ}\text{F}$ is equal to $\text{K} \times \frac{9}{5} - 459.67$.

Kelvin

Kelvin is the standard unit of thermodynamic temperature in the International System of Units (SI). Kelvin generally has no negative values as it starts at absolute zero, which is the lowest temperature theoretically possible.

How to convert Fahrenheit to Kelvin

$$\text{Temperature}_{\text{K}} = \left( \text{Temperature}_{\text{°F}} + 459.67\right) \cdot \frac{5}{9}$$

Examples

Example 1

Convert $20.0\ \text{°F}$ to $\text{K}$.

$$\text{Temperature}_{\text{K}} = \left( 20.0 + 459.67\right) \cdot \frac{5}{9}$$

$$\text{Temperature}_{\text{K}} = 266.483333$$

$$\therefore \ 20.0\ \text{°F} = 266.483333 \ \text{K}$$

Example 2

Convert $90.0\ \text{°F}$ to $\text{K}$.

$$\text{Temperature}_{\text{K}} = \left( 90.0 + 459.67\right) \cdot \frac{5}{9}$$

$$\text{Temperature}_{\text{K}} = 305.372222$$

$$\therefore \ 90.0\ \text{°F} = 305.372222 \ \text{K}$$

Example 3

Convert $115.0\ \text{°F}$ to $\text{K}$.

$$\text{Temperature}_{\text{K}} = \left( 115.0 + 459.67\right) \cdot \frac{5}{9}$$

$$\text{Temperature}_{\text{K}} = 319.261111$$

$$\therefore \ 115.0\ \text{°F} = 319.261111 \ \text{K}$$

Example 4

Convert $145.0\ \text{°F}$ to $\text{K}$.

$$\text{Temperature}_{\text{K}} = \left( 145.0 + 459.67\right) \cdot \frac{5}{9}$$

$$\text{Temperature}_{\text{K}} = 335.927778$$

$$\therefore \ 145.0\ \text{°F} = 335.927778 \ \text{K}$$

Example 5

Convert $190.0\ \text{°F}$ to $\text{K}$.

$$\text{Temperature}_{\text{K}} = \left( 190.0 + 459.67\right) \cdot \frac{5}{9}$$

$$\text{Temperature}_{\text{K}} = 360.927778$$

$$\therefore \ 190.0\ \text{°F} = 360.927778 \ \text{K}$$

Fahrenheit to Kelvin conversion table

Fahrenheit to Kelvin conversion table

Fahrenheit [°F]	Kelvin [K]
1	255.927778
2	256.483333
3	257.038889
4	257.594444
5	258.15
6	258.705556
7	259.261111
8	259.816667
9	260.372222
10	260.927778

Convert Fahrenheit to other Temperature units

Convert Fahrenheit to other Temperature units

Fahrenheit [°F]	Other unit
1	-17.222222 Celsius [°C]
1	460.67 Rankine [°R]