Fahrenheit to Celsius conversion: Calculate 68°F to 20°C Now

Type in the field below to convert from Fahrenheit to Celsius

Fahrenheit to Celsius calculator

Celsius to Fahrenheit calculator

Exemple of Fahrenheit to Celsius conversion

0 degrees Fahrenheit is equal to -17.77778 degrees Celsius

0 °F = -17.77778 °C


°C = (°F – 32) * 5/9

Fahrenheit to Celsius

Example1: convert 32°F Fahrenheit to degrees Celsius °C ?

°C = (°F – 32) × 5/9

°C = (32 – 32)× 5/9 = 0°C

32°F  =  0°c

Fahrenheit to Celsius
Fahrenheit °FCelsius °C
0 °F -17.77777778 °C
1 °F -17.22222222 °C
2 °F -17.77777778 °C
3 °F -16.11111111 °C
4 °F -15.55555556 °C
5 °F -16.77777778 °C
6 °F -14.44444444 °C
10 °F -12.22222222 °C
20 °F -6.666666667 °C
30 °F -1.111111111 °C
40 °F 4.444444444 °C
50 °F 10 °C
60 °F 15.55555556 °C
70 °F 21.11111111 °C
100 °F 37.77777778 °C
200 °F 93.33333333 °C
300 °F 148.8888889 °C
400 °F 204.4444444 °C
500 °F 260 °C
600 °F 315.5555556 °C


According to the Fahrenheit scale, water freezes at 32 degrees and boils at 212 degrees. Fahrenheit is represented by °F, and the temperature is expressed as 30°F, 70°F, and so on.

Fahrenheit to Celsius

Fahrenheit Definition:

The symbol for Fahrenheit is °F

Before metrication, Fahrenheit was widely used as a unit of temperature. Currently, it is determined by two fixed points: 32°F is the temperature at which water freezes, and 212°F is the boiling point of water at sea level and standard atmospheric pressure. It is divided into 180 equal parts between freezing and boiling.

Fahrenheit to Celsius

Based on a measurement created by Daniel Gabriel Fahrenheit in 1724, the Fahrenheit scale was developed. In the beginning, he chose the values of 30°F for the freezing point of water, and 90°F for the normal body temperature, based on an ice-salt mixture. The scale was later adjusted so that ice melts at 32°F and human body temperature is 96°F. 

Since the difference between the temperatures allowed him to divide the interval six times, he chose these values so he could mark degrees easily on his instruments. 

The Fahrenheit scale used to be the primary scale in English-speaking countries until the early 1960s. Today, most countries use the Celsius scale instead of Fahrenheit. Many of these countries made this switch when they metricized (converted to using metric units). 

There are still a few countries that use the Fahrenheit scale as the official temperature scale, including the United States, the Bahamas, Belize, the Cayman Islands, e.t.c.

Relationship Between Fahrenheit and Celsius

Fahrenheit and Celsius have a direct relationship that is proportional. Temperatures on the Fahrenheit scale increase when temperatures on the Celsius scale increase. In the same way, as the temperature on the Celsius scale falls, the temperature on the Fahrenheit scale falls as well. 

When it comes to water boiling points, the water boiling point in Fahrenheit is at 212° while for Celsius it is at 100°

Similar to this, water has a freezing point of 0°C on the Celsius scale and 32°F on the Fahrenheit scale. Fahrenheit and Celsius are related using the formula given in the following section.

T(°C) = (T(°F) – 32) × 5/9


T(°C) = (T(°F) – 32) / (9/5)


T(°C) = (T(°F) – 32) / 1.8


Water freezes at zero degrees Celsius and boils at 100 degrees Celsius, also known as Centigrade. A temperature is written as 100°C, 0°C, and so on using the sign °C.

As early as 1743, the Celsius scale used mercury as the working material for the measurement of the freezing point and boiling point of water, both at one standard atmosphere of pressure, at a pressure of 0°C. Originally, 0°C was the melting point of snow and 100°C was the boiling point of water. This inversion of the original definition of Celsius led to its widespread use as a unit and scale. In 1954, the unit of Celsius, along with its scale, were re-defined once again so that they were based instead on absolute zero (-273.15 °C) and VSMOW (specially purified water). 

Since the mid to late 20th century, Celsius scales have replaced Fahrenheit scales in most countries. Most countries around the world use this scale, with the exception of those that have not yet adopted the metric system, such as the United States. Although Celsius is widely used in the scientific community even in countries like the United States, it is not widely used in everyday temperature measurements references.

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