Further to Jorge P's question, when people are talking, what is the cut-off from farenheit to celcius?

Question

What is the dividing line when talking cold temperatures in celcius/centigrade and hot temperatures in farenheit?

I know all the formulae and that they are the same thing.

I just want to know why, when people are talking and they say it is 3 degrees they are talking celsius, but when they 70 degrees they are talking farenheit.

Where is the cut-off? At what stage do people stop talking celsius/centigrade and start talking in farenheit?
(please look at Jorge P's question and my reply before you answer!!!)

Answer 1

Where it gets confusing is from 33 degrees really, and you then have to rely on the geographical position of the person making the statement. Obviously if you are talking to someone in the same place as you the question of F or C doesn't arise.
It shows that we should be more careful what we say, especially to a wider audience, who as on here could be situated anywhere in the world.
If I said 33 degrees, knowing I live in the tropics you would assume centigrade (91F).

Right who fancies a pint of beer at fifty degrees, and who fancies a litre of ale at fifty degrees.

Answer 2

There's no cut off because they're two different scales of measurement - like meters and feet.
In the United States Fahrenheit is used but elsewhere around the world, such as Canada, people tend to use Celcius.
In Meteorology (classes), we used Celcius and Kelvin more than Fahrenheit. It's just a matter of knowing conversions and being able to approximate what degree Celcius is about what degree Fahrenheit.

Answer 3

Fahrenheit and Celsius are two different scales and either can be used for all temperatures.

Conversion from Fahrenheit to Celsius:
Tc=(5/9)*(Tf-32)

Convert from Celsius to Fahrenheit,:
Tf=(9/5)*Tc+32

Tc=temperature in degrees CelsiusTf=temperature in degrees Fahrenheit
* means multiply

Answer 4

hard to say but a quick reference is to turn Celsius into Fahrenheit you double it and add thirty. 20 degrees Celsius = 20x2+30 =70 Fahrenheit. so if it's cold outside and hear the temperature is 30 they are using Fahrenheit but there is no real cut off..

Answer 5

I don't think they do.In the UK we use Celsius all the time.I believe they still mostly use Fahrenheit in America.I've never noticed anyone ever using two different scales together,it wouldn't make sense