Convert temperatures

Fahrenheit (°F) to Celsius (°C)

Temperatures ﹣ Converter Fahrenheit to Celsius

Here you can convert the Temperature Unit Fahrenheit into the unit Celsius and vice versa you can convert Celsius into Fahrenheit. By clicking the "Swap units" icon, you will always obtain the desired conversion in the calculation result, i.e., °F to °C or °C to °F. With the following calculator you can also calculate any other Temperature Unit.

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Info about "Fahrenheit"

In the USA, the Fahrenheit scale with the unit degree Fahrenheit (°F) is still very common. Daniel Gabriel Fahrenheit was a German physicist who developed his temperature scale in 1714. Fahrenheit used, as the zero point of his scale, the lowest temperature he could produce with a mixture of ice, water and ammonia. This was -17.8 degrees Celsius, which he defined as the zero point of his scale, i.e., 0 degree Fahrenheit.

As a second and third fixed point, Fahrenheit defined the freezing point of normal water at 32 degrees Fahrenheit and the body temperature of a healthy person at 96 degrees Fahrenheit. In conjunction with the improved accuracy of measurements in the 19th century and the conversion ­method to todays Kelvin and Celsius degrees, the current fixed points of the Fahrenheit scale are at the freezing point (32 degrees Fahrenheit) and the boiling point of water (212 degrees Fahrenheit). With Celsius and Kelvin, there are 100 degrees, i.e., 100 scales, between the freezing point and the boiling point of water, whereas with Fahrenheit, there are 212 − 32 = 180 scales. Therefore, the conversion from Fahrenheit to, e.g., Celsius is done on the one hand via the shift of 32 degrees at the freezing point of water and on the other hand via the number of individual scale­ marks, i.e., the division into 180 instead of 100 degrees up to the boiling point of water. Thus, the Conversion formula for Celsius to Fahrenheit is as follows:

°F = °C × 1.8 + 32

The Fahrenheit scale is only officially used in the USA and its outlying areas, including Belize, the Bahamas and the Cayman Islands.

Info about "Celsius"

The common unit for temperature in German-speaking countries is measured in degree Celsius (°C). Anders Celsius, a Swedish astronomer, mathematician and physicist, defined this temperature division named after him, degree Celsius, in the 18th century.

He chose the melting point and boiling point of water as fixed points for the temperature scale and divided the change in volume of mercury between these points into 100 equal parts. So today we are used to water freezing at 0 degree Celsius and water boiling at 100 degrees Celsius. And to measure the temperature, mercury­ thermo­meters are often still in use.

Celsius thus forms a so-called empirical temperature scale, i.e., an arbitrary determination of the magnitude of the temperature by indicating the temperature in relation to a reference value. For degree Celsius, the arbitrary determination, as described, is between 0 degree and 100 degrees, depending on the aggregate ­state of the water.

While Kelvin is the base unit for temperature in the international system of units SI (Système international d'unités), degree Celsius (°C) is an officially derived SI unit. As a derived SI unit, the degree Celsius (°C) is officially approved in many European countries, especially in Germany, Austria and Switzerland.

Basis for conversion Fahrenheit (°F) to Celsius (°C) and vice versa

The abbreviation for the "Temperature Unit Fahrenheit" is °F. The abbreviation for the "Temperature Unit Celsius" is °C.

Formula for the conversion of Fahrenheit (°F) to Celsius (°C) and vice versa

The calculation from Fahrenheit to Celsius shall be made using the following conversion formula:

 Conversion formula Fahrenheit to Celsius 

Determine the number of Celsius from Fahrenheit

°C = (°F - 32) / 1.8


Formula for the conversion of Celsius (°C) to Fahrenheit (°F)

The calculation from Celsius to Fahrenheit shall be made using the following conversion formula:

 Conversion formula Celsius to Fahrenheit 

Determine the number of Fahrenheit from Celsius

°F = (°C) * 1.8 + 32


Overview table : How many Fahrenheit are in a Celsius ?

Fahrenheit °F ⇒ Celsius °C
0.01 °F  are  -17.7722 °C
0.02 °F  are  -17.7667 °C
0.03 °F  are  -17.7611 °C
0.04 °F  are  -17.7556 °C
0.05 °F  are  -17.75 °C
0.06 °F  are  -17.7444 °C
0.07 °F  are  -17.7389 °C
0.08 °F  are  -17.7333 °C
0.09 °F  are  -17.7278 °C
0.10 °F  are  -17.7222 °C
0.20 °F  are  -17.6667 °C
0.30 °F  are  -17.6111 °C
0.40 °F  are  -17.5556 °C
0.50 °F  are  -17.5 °C
0.60 °F  are  -17.4444 °C
0.70 °F  are  -17.3889 °C
0.80 °F  are  -17.3333 °C
0.90 °F  are  -17.2778 °C
1 °F  corresponds to  -17.2222 °C
2 °F  are  -16.6667 °C
3 °F  are  -16.1111 °C
4 °F  are  -15.5556 °C
5 °F  are  -15 °C
6 °F  are  -14.4444 °C
7 °F  are  -13.8889 °C
8 °F  are  -13.3333 °C
9 °F  are  -12.7778 °C
10 °F  are  -12.2222 °C
20 °F  are  -6.6667 °C
30 °F  are  -1.1111 °C
40 °F  are  4.4444 °C
50 °F  are  10 °C
60 °F  are  15.5556 °C
70 °F  are  21.1111 °C
80 °F  are  26.6667 °C
90 °F  are  32.2222 °C
100 °F  are  37.7778 °C
200 °F  are  93.3333 °C
300 °F  are  148.8889 °C
400 °F  are  204.4444 °C
500 °F  are  260 °C
600 °F  are  315.5556 °C
700 °F  are  371.1111 °C
800 °F  are  426.6667 °C
900 °F  are  482.2222 °C
1 000 °F  are  537.7778 °C

Overview table : How many Celsius are in a Fahrenheit ?

Celsius °C ⇒ Fahrenheit °F
0.01 °C  are  32.018 °F
0.02 °C  are  32.036 °F
0.03 °C  are  32.054 °F
0.04 °C  are  32.072 °F
0.05 °C  are  32.09 °F
0.06 °C  are  32.108 °F
0.07 °C  are  32.126 °F
0.08 °C  are  32.144 °F
0.09 °C  are  32.162 °F
0.10 °C  are  32.18 °F
0.20 °C  are  32.36 °F
0.30 °C  are  32.54 °F
0.40 °C  are  32.72 °F
0.50 °C  are  32.9 °F
0.60 °C  are  33.08 °F
0.70 °C  are  33.26 °F
0.80 °C  are  33.44 °F
0.90 °C  are  33.62 °F
1 °C  corresponds to  33.8 °F
2 °C  are  35.6 °F
3 °C  are  37.4 °F
4 °C  are  39.2 °F
5 °C  are  41 °F
6 °C  are  42.8 °F
7 °C  are  44.6 °F
8 °C  are  46.4 °F
9 °C  are  48.2 °F
10 °C  are  50 °F
20 °C  are  68 °F
30 °C  are  86 °F
40 °C  are  104 °F
50 °C  are  122 °F
60 °C  are  140 °F
70 °C  are  158 °F
80 °C  are  176 °F
90 °C  are  194 °F
100 °C  are  212 °F
200 °C  are  392 °F
300 °C  are  572 °F
400 °C  are  752 °F
500 °C  are  932 °F
600 °C  are  1112 °F
700 °C  are  1292 °F
800 °C  are  1472 °F
900 °C  are  1652 °F
1 000 °C  are  1832 °F

Source information

As source for the information in the 'Temperatures' category, we have used in particular:

Last update on November 25, 2022

The pages of the 'Temperatures' category were last editorially reviewed by Michael Mühl on November 25, 2022. They all correspond to the current status.

Previous changes on November 25, 2019

  • Publication of the topic Convert Temperatures together with the corresponding texts.
  • Editorial revision of all texts in this category