How do you convert temperatures from Fahrenheit to Celsius?

Answer 1

C = (°F − 32) / 1.8
F = °C × 1.8 + 32

Answer 2

The Celcius system was invented by a French, Celcius something. A jealous German scientist, Fahrenheit something, invented his own system, the Fahrenheit system. Man's jealousy be cursed! If it hadn't been for this stupid creature, all the world would be using the most simple system, the Celcius one.
Simpler? You must be asking yourself why. It is simpler because, similarly to all the other systems in the metric world, it uses powers of 10. 0 represents the melting ice, 100 represents boiling water. Compare to the Farenheit system in which the melting ice is represented by 32 and boiling water by 212.
Now that all that is clear, let me answer your question. You want to know the way to convert Celcius to Fahrenheit. 1st you must consider that the two quantities are not proportionnal. If they were, the task would be simple:you would just have to multiply or divide the value of either system by a certain constant k.
You must then realise that the value of the melting ice is 0, and that that of the boiling water is 100 in the Celcius system. You must then remark that the corresponding values of the Farenheit system are 32 and 212.
To obtain a proportional statement uniting the two systems, you must then realise the intervals between these basic values.
Between 100 and 0, there are 100 intervals.
Between 212 and 32, there are 180 intervals.
Since we are dealing with the same thing(temperature), we must realise that for a value of the Celcius system to equal in meaning a value of the Fahrenheit system, there must be a relation between the two systems. This relation can be stated basing oneself on the intervals. A C(Celcius) value subtracted of 0 will be propotionnal to an F (Fahrenheit) value subtracted of 32, if and only if we consider these differences with the differences between the two determining values(100 and 0 for the Celcius system and 212 and32 for the Fahrenheit system). In other words we must consider the relation between the difference in the C system(of a value in the C system and 0) and 100 will equal the relation between the difference in the F system (of a value in the F system and 32) and 180.
Let's write this more simply:
c: a value in the Celcius system.
f: a value in the Fahrenheit system.
(c-0)/(100-0)=(f-32)/(212-32)
( c-0)/100= ( f-32)/180
You obtain the relation:
c/100=(f-32)/180
Believe me or not, this formula can be used without complicating it as do the idiotic idiots who just seek complicated formulas they don't even understand. The complicated formula:
c=(f-32)/1.8
is derived from:
(100)c/100=(100)(f-32)/180
c=(100)(f-32)/180
c=(1)(f-32)/1.8
c=(f-32)/1.8
and f= 1.8c+32
is derived from:
(f-32)/180=c
(180)(f-32)/180=180c/100
f-32=180c/100
f=(180c/100)+32
f=1.8c+32
I greatly recommend you to use the primer formula. It will help you realise, as you solve your temperature problems, that what you are doing makes sense, that it wasn't just invented by some wise guy with a beard who must always be right.

Answer 3

Here is the algebraic formula used for conversion from Fahrenheit to Celsius:

Tc=(5/9)*(Tf-32)
Tc=temperature in degrees CelsiusTf=temperature in degrees Fahrenheit
* means multiply

Now, to convert from Celsius to Fahrenheit,:

Tf=(9/5)*Tc+32
Tc=temperature in degrees CelsiusTf=temperature in degrees Fahrenheit

Answer 4

In the formulas below, / means to divide, * means to multiply, - means subtract, + means to add and = is equal. Tc = temperature in degrees Celsius, Tf = temperature in degrees Fahrenheit

To convert a Fahrenheit temperature into Celsius:

Tc = (5/9)*(Tf-32)

For example, to convert a Fahrenheit temperature of 98.6°F into degrees Celsius, first subtract 32 from the Fahrenheit temperature to get 66.6. Then you multiply 66.6 by five-ninths to get 37°C.

To convert a Celsius temperature into degrees Fahrenheit:

Tf = ((9/5)*Tc)+32

For example, to convert a Celsius temperature of 100 into degrees Fahrenheit, first multiply the Celsius temperature reading by nine-fifths to get 180. Then add 32 to 180 and get 212°F.

The Celsius temperature scale is still sometimes referred to as the "centigrade" scale. Centigrade means "consisting of or divided into 100 degrees." The Swedish Astronomer Andres Celsius (1701-1744) developed the centigrade scales for scientific purposes. It has 100 degrees between the freezing point (0°C) and boiling point (100°C) of pure water at sea-level air pressure. An international conference on weights and measures voted to name the centigrade scale after its inventor in 1948.

The Kelvin and Rankine scales

Scientists use the Kelvin scale, which is based on the Celsius scale, but has no negative numbers. Zero on the Kelvin scale is considered the be absolute zero; that is, the point at which all molecular motion stops.

To convert a temperature reading into degrees Kelvin, simply add 273.16 to the Celsius temperature. This explains why in scientific temperatures you'll see references to temperatures on Earth in the 300-degree range.

The absolute zero version of the Fahrenheit scale is the Rankine scale. Add 460 degrees to Fahrenheit temperatures to obtain the Rankine temperature.

Answer 5

This site will do it for you: http://www.wbuf.noaa.gov/tempfc.htm ..... or you can do it yourself easily: (F - 32) x (5 / 9)