Have you ever had a friend or relative from Europe tell you that the temperature was really HOT, and when you asked them how hot it was they said "34 degrees?" If you have ever tried to convert the centigrade temperature scale, used by most of the world, into the Fahrenheit scale, you know it can be challenging, but a very important bit of knowledge to have.
A good place to start would be to understand the formula used to make the conversion. It looks like this:
9/5 x Centigrade + 32 = Fahrenheit
In words, that means you multiply the Centigrade temperature by nine fifths and add 32 to get the Fahrenheit equivalent.
Example
What is the Fahrenheit equivalent of 25 degrees centigrade?
9/5 times 25 = 45
45 + 32 = 67
So 25 Centigrade is 67 Fahrenheit.
Now, as a bonus here is a chart that should serve as good reference tool when you are having trouble making the conversion.