Unit definitions

Fahrenheit

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

Celsius

Celsius is defined by the temperatures at which water freezes ($0 \ \text{°C}$) and boils ($100 \ \text{°C}$) at standard atmospheric pressure. Temperature in Celsius is equal to $\text{K} - 273.15$.

How to convert Fahrenheit to Celsius

$$\text{Temperature}_{\text{°C}} = \left( - 32 + \text{Temperature}_{\text{°F}}\right) \cdot \frac{5}{9}$$

Examples

Example 1

Convert $25.0\ \text{°F}$ to $\text{°C}$.

$$\text{Temperature}_{\text{°C}} = \left( - 32 + 25.0\right) \cdot \frac{5}{9}$$

$$\text{Temperature}_{\text{°C}} = -3.888889$$

$$\therefore \ 25.0\ \text{°F} = -3.888889 \ \text{°C}$$

Example 2

Convert $60.0\ \text{°F}$ to $\text{°C}$.

$$\text{Temperature}_{\text{°C}} = \left( - 32 + 60.0\right) \cdot \frac{5}{9}$$

$$\text{Temperature}_{\text{°C}} = 15.555556$$

$$\therefore \ 60.0\ \text{°F} = 15.555556 \ \text{°C}$$

Example 3

Convert $120.0\ \text{°F}$ to $\text{°C}$.

$$\text{Temperature}_{\text{°C}} = \left( - 32 + 120.0\right) \cdot \frac{5}{9}$$

$$\text{Temperature}_{\text{°C}} = 48.888889$$

$$\therefore \ 120.0\ \text{°F} = 48.888889 \ \text{°C}$$

Example 4

Convert $140.0\ \text{°F}$ to $\text{°C}$.

$$\text{Temperature}_{\text{°C}} = \left( - 32 + 140.0\right) \cdot \frac{5}{9}$$

$$\text{Temperature}_{\text{°C}} = 60$$

$$\therefore \ 140.0\ \text{°F} = 60 \ \text{°C}$$

Example 5

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

$$\text{Temperature}_{\text{°C}} = \left( - 32 + 190.0\right) \cdot \frac{5}{9}$$

$$\text{Temperature}_{\text{°C}} = 87.777778$$

$$\therefore \ 190.0\ \text{°F} = 87.777778 \ \text{°C}$$

Fahrenheit to Celsius conversion table

Fahrenheit to Celsius conversion table

Fahrenheit [°F]	Celsius [°C]
1	-17.222222
2	-16.666667
3	-16.111111
4	-15.555556
5	-15
6	-14.444444
7	-13.888889
8	-13.333333
9	-12.777778
10	-12.222222

Convert Fahrenheit to other Temperature units

Convert Fahrenheit to other Temperature units

Fahrenheit [°F]	Other unit
1	255.927778 Kelvin [K]
1	460.67 Rankine [°R]